102042056 has 8 divisors (see below), whose sum is σ = 191328870. Its totient is φ = 51021024.

The previous prime is 102042037. The next prime is 102042067. The reversal of 102042056 is 650240201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 66161956 + 35880100 = 8134^2 + 5990^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6377621 + ... + 6377636.

Almost surely, 2^102042056 is an apocalyptic number.

It is an amenable number.

102042056 is a deficient number, since it is larger than the sum of its proper divisors (89286814).

102042056 is a wasteful number, since it uses less digits than its factorization.

102042056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12755263 (or 12755259 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 102042056 is about 10101.5868060419. The cubic root of 102042056 is about 467.2970795207.

Adding to 102042056 its reverse (650240201), we get a palindrome (752282257).

The spelling of 102042056 in words is "one hundred two million, forty-two thousand, fifty-six".