102762021042 has 24 divisors (see below), whose sum is σ = 222733219644. Its totient is φ = 34241364864.

The previous prime is 102762021017. The next prime is 102762021071. The reversal of 102762021042 is 240120267201.

102762021042 is a `hidden beast` number, since 1 + 0 + 27 + 620 + 2 + 10 + 4 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 102631170321 + 130850721 = 320361^2 + 11439^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102762020997 and 102762021015.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1003323 + ... + 1100990.

Almost surely, 2^102762021042 is an apocalyptic number.

102762021042 is an abundant number, since it is smaller than the sum of its proper divisors (119971198602).

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

102762021042 is a wasteful number, since it uses less digits than its factorization.

102762021042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107034 (or 2107031 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

Adding to 102762021042 its reverse (240120267201), we get a palindrome (342882288243).

The spelling of 102762021042 in words is "one hundred two billion, seven hundred sixty-two million, twenty-one thousand, forty-two".