42056949 has 16 divisors (see below), whose sum is σ = 63834624. Its totient is φ = 24380400.

The previous prime is 42056947. The next prime is 42056957. The reversal of 42056949 is 94965024.

It is not a de Polignac number, because 42056949 - 2¹ = 42056947 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42056947) 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, 26947 + ... + 28464.

It is an arithmetic number, because the mean of its divisors is an integer number (3989664).

Almost surely, 2^42056949 is an apocalyptic number.

It is an amenable number.

42056949 is a deficient number, since it is larger than the sum of its proper divisors (21777675).

42056949 is a wasteful number, since it uses less digits than its factorization.

42056949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55448.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 42056949 is about 6485.1329207658. The cubic root of 42056949 is about 347.7597016610.

The spelling of 42056949 in words is "forty-two million, fifty-six thousand, nine hundred forty-nine".