100142056 has 32 divisors (see below), whose sum is σ = 214980480. Its totient is φ = 42840000.

The previous prime is 100142047. The next prime is 100142071. The reversal of 100142056 is 650241001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37981 + ... + 40531.

It is an arithmetic number, because the mean of its divisors is an integer number (6718140).

Almost surely, 2^100142056 is an apocalyptic number.

It is an amenable number.

100142056 is an abundant number, since it is smaller than the sum of its proper divisors (114838424).

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

100142056 is a wasteful number, since it uses less digits than its factorization.

100142056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3265 (or 3261 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 100142056 is about 10007.1002793017. The cubic root of 100142056 is about 464.3785678835.

Adding to 100142056 its reverse (650241001), we get a palindrome (750383057).

The spelling of 100142056 in words is "one hundred million, one hundred forty-two thousand, fifty-six".