13042040 has 32 divisors (see below), whose sum is σ = 32013360. Its totient is φ = 4742400.

The previous prime is 13042033. The next prime is 13042069. The reversal of 13042040 is 4024031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14381 + ... + 15260.

Almost surely, 2^13042040 is an apocalyptic number.

13042040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13042040 is an abundant number, since it is smaller than the sum of its proper divisors (18971320).

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

13042040 is a wasteful number, since it uses less digits than its factorization.

13042040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29663 (or 29659 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 13042040 is about 3611.3764688827. The cubic root of 13042040 is about 235.3866578642.

Adding to 13042040 its reverse (4024031), we get a palindrome (17066071).

Subtracting from 13042040 its reverse (4024031), we obtain a square (9018009 = 3003²).

The spelling of 13042040 in words is "thirteen million, forty-two thousand, forty".