142115400 has 144 divisors (see below), whose sum is σ = 545500800. Its totient is φ = 32480640.

The previous prime is 142115353. The next prime is 142115401. The reversal of 142115400 is 4511241.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (142115401) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6961 + ... + 18239.

It is an arithmetic number, because the mean of its divisors is an integer number (3788200).

Almost surely, 2^142115400 is an apocalyptic number.

142115400 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 142115400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272750400).

142115400 is an abundant number, since it is smaller than the sum of its proper divisors (403385400).

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

142115400 is a wasteful number, since it uses less digits than its factorization.

142115400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11308 (or 11296 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 142115400 is about 11921.2163808900. The cubic root of 142115400 is about 521.8516335290.

Adding to 142115400 its reverse (4511241), we get a palindrome (146626641).

The spelling of 142115400 in words is "one hundred forty-two million, one hundred fifteen thousand, four hundred".