42907427 has 4 divisors (see below), whose sum is σ = 42925656. Its totient is φ = 42889200.

The previous prime is 42907411. The next prime is 42907433. The reversal of 42907427 is 72470924.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42907427 - 2⁴ = 42907411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42907027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4949 + ... + 10502.

It is an arithmetic number, because the mean of its divisors is an integer number (10731414).

Almost surely, 2^42907427 is an apocalyptic number.

42907427 is a deficient number, since it is larger than the sum of its proper divisors (18229).

42907427 is a wasteful number, since it uses less digits than its factorization.

42907427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18228.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 42907427 is about 6550.3760960727. The cubic root of 42907427 is about 350.0882144991.

It can be divided in two parts, 42907 and 427, that added together give a palindrome (43334).

The spelling of 42907427 in words is "forty-two million, nine hundred seven thousand, four hundred twenty-seven".