13042278 has 24 divisors (see below), whose sum is σ = 29023488. Its totient is φ = 4229712.

The previous prime is 13042277. The next prime is 13042283. The reversal of 13042278 is 87224031.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13042273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9126 + ... + 10457.

It is an arithmetic number, because the mean of its divisors is an integer number (1209312).

Almost surely, 2^13042278 is an apocalyptic number.

13042278 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13042278 is an abundant number, since it is smaller than the sum of its proper divisors (15981210).

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

13042278 is a wasteful number, since it uses less digits than its factorization.

13042278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19628 (or 19625 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 13042278 is about 3611.4094201572. The cubic root of 13042278 is about 235.3880896874.

The spelling of 13042278 in words is "thirteen million, forty-two thousand, two hundred seventy-eight".