102342040040 has 32 divisors (see below), whose sum is σ = 242389044000. Its totient is φ = 38782246464.

The previous prime is 102342040039. The next prime is 102342040043. The reversal of 102342040040 is 40040243201.

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

It is a junction number, because it is equal to n+sod(n) for n = 102342039994 and 102342040021.

It is not an unprimeable number, because it can be changed into a prime (102342040043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67329530 + ... + 67331049.

It is an arithmetic number, because the mean of its divisors is an integer number (7574657625).

Almost surely, 2^102342040040 is an apocalyptic number.

102342040040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102342040040 is an abundant number, since it is smaller than the sum of its proper divisors (140047003960).

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

102342040040 is a wasteful number, since it uses less digits than its factorization.

102342040040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134660609 (or 134660605 counting only the distinct ones).

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

Adding to 102342040040 its reverse (40040243201), we get a palindrome (142382283241).

The spelling of 102342040040 in words is "one hundred two billion, three hundred forty-two million, forty thousand, forty".