102010440 has 64 divisors (see below), whose sum is σ = 349752960. Its totient is φ = 23316480.

The previous prime is 102010439. The next prime is 102010477. The reversal of 102010440 is 44010201.

It is a super-2 number, since 2×102010440² = 20812259737987200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59881 + ... + 61560.

It is an arithmetic number, because the mean of its divisors is an integer number (5464890).

Almost surely, 2^102010440 is an apocalyptic number.

102010440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102010440 is an abundant number, since it is smaller than the sum of its proper divisors (247742520).

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

102010440 is a wasteful number, since it uses less digits than its factorization.

102010440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121462 (or 121458 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 102010440 is about 10100.0217821547. The cubic root of 102010440 is about 467.2488131779.

Adding to 102010440 its reverse (44010201), we get a palindrome (146020641).

The spelling of 102010440 in words is "one hundred two million, ten thousand, four hundred forty".