103021256440 has 64 divisors (see below), whose sum is σ = 235006090560. Its totient is φ = 40641331200.

The previous prime is 103021256389. The next prime is 103021256441. The reversal of 103021256440 is 44652120301.

It is a super-2 number, since 2×103021256440² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 103021256399 and 103021256408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103021256441) 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, 988669 + ... + 1087891.

It is an arithmetic number, because the mean of its divisors is an integer number (3671970165).

Almost surely, 2^103021256440 is an apocalyptic number.

103021256440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103021256440 is an abundant number, since it is smaller than the sum of its proper divisors (131984834120).

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

103021256440 is a wasteful number, since it uses less digits than its factorization.

103021256440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99592 (or 99588 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 103021256440 its reverse (44652120301), we get a palindrome (147673376741).

The spelling of 103021256440 in words is "one hundred three billion, twenty-one million, two hundred fifty-six thousand, four hundred forty".