102400402340 has 24 divisors (see below), whose sum is σ = 226358784960. Its totient is φ = 38804362848.

The previous prime is 102400402337. The next prime is 102400402399. The reversal of 102400402340 is 43204004201.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134736992 + ... + 134737751.

It is an arithmetic number, because the mean of its divisors is an integer number (9431616040).

Almost surely, 2^102400402340 is an apocalyptic number.

102400402340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102400402340 is an abundant number, since it is smaller than the sum of its proper divisors (123958382620).

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

102400402340 is a wasteful number, since it uses less digits than its factorization.

102400402340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269474771 (or 269474769 counting only the distinct ones).

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

Adding to 102400402340 its reverse (43204004201), we get a palindrome (145604406541).

The spelling of 102400402340 in words is "one hundred two billion, four hundred million, four hundred two thousand, three hundred forty".