140247450 has 288 divisors, whose sum is σ = 477719424. Its totient is φ = 29859840.

The previous prime is 140247407. The next prime is 140247463. The reversal of 140247450 is 54742041.

140247450 is a `hidden beast` number, since 140 + 2 + 474 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1445802 + ... + 1445898.

It is an arithmetic number, because the mean of its divisors is an integer number (1658748).

Almost surely, 2^140247450 is an apocalyptic number.

140247450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 140247450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238859712).

140247450 is an abundant number, since it is smaller than the sum of its proper divisors (337471974).

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

140247450 is a wasteful number, since it uses less digits than its factorization.

140247450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 140247450 is about 11842.6116207533. The cubic root of 140247450 is about 519.5551545656. Note that the first 3 decimals are identical.

Adding to 140247450 its reverse (54742041), we get a palindrome (194989491).

The spelling of 140247450 in words is "one hundred forty million, two hundred forty-seven thousand, four hundred fifty".