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140242131200 = 28521910611087
BaseRepresentation
bin1000001010011100010…
…1010001100100000000
3111101222201022102022102
42002213011101210000
54244203441144300
6144232031325532
713063221306113
oct2024705214400
9441881272272
10140242131200
1154527032976
122321a9808a8
13102bcaaabb2
146b0585a57a
1539ac0ee0d5
hex20a7151900

140242131200 has 216 divisors, whose sum is σ = 366071569920. Its totient is φ = 53045452800.

The previous prime is 140242131131. The next prime is 140242131203. The reversal of 140242131200 is 2131242041.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (140242131203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129017057 + ... + 129018143.

Almost surely, 2140242131200 is an apocalyptic number.

140242131200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140242131200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183035784960).

140242131200 is an abundant number, since it is smaller than the sum of its proper divisors (225829438720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140242131200 is a wasteful number, since it uses less digits than its factorization.

140242131200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2193 (or 2174 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 140242131200 its reverse (2131242041), we get a palindrome (142373373241).

The spelling of 140242131200 in words is "one hundred forty billion, two hundred forty-two million, one hundred thirty-one thousand, two hundred".