42407427 has 16 divisors (see below), whose sum is σ = 57335040. Its totient is φ = 27879072.

The previous prime is 42407419. The next prime is 42407429. The reversal of 42407427 is 72470424.

It is not a de Polignac number, because 42407427 - 2³ = 42407419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42407394 and 42407403.

It is not an unprimeable number, because it can be changed into a prime (42407429) 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, 84058 + ... + 84560.

It is an arithmetic number, because the mean of its divisors is an integer number (3583440).

Almost surely, 2^42407427 is an apocalyptic number.

42407427 is a deficient number, since it is larger than the sum of its proper divisors (14927613).

42407427 is a wasteful number, since it uses less digits than its factorization.

42407427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842.

The product of its (nonzero) digits is 12544, while the sum is 30.

The square root of 42407427 is about 6512.0985096972. The cubic root of 42407427 is about 348.7230392436.

The spelling of 42407427 in words is "forty-two million, four hundred seven thousand, four hundred twenty-seven".