102202432040 has 64 divisors (see below), whose sum is σ = 233531620560. Its totient is φ = 40249589760.

The previous prime is 102202432027. The next prime is 102202432043. The reversal of 102202432040 is 40234202201.

It can be written as a sum of positive squares in 8 ways, for example, as 5567248996 + 96635183044 = 74614^2 + 310862^2 .

It is a super-2 number, since 2×102202432040² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (102202432043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 680600 + ... + 817080.

Almost surely, 2^102202432040 is an apocalyptic number.

102202432040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102202432040 is an abundant number, since it is smaller than the sum of its proper divisors (131329188520).

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

102202432040 is a wasteful number, since it uses less digits than its factorization.

102202432040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136782 (or 136778 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 102202432040 its reverse (40234202201), we get a palindrome (142436634241).

The spelling of 102202432040 in words is "one hundred two billion, two hundred two million, four hundred thirty-two thousand, forty".