42457407 has 8 divisors (see below), whose sum is σ = 56699184. Its totient is φ = 28260288.

The previous prime is 42457357. The next prime is 42457417. The reversal of 42457407 is 70475424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42457407 - 2¹⁰ = 42456383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42457417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8878 + ... + 12795.

It is an arithmetic number, because the mean of its divisors is an integer number (7087398).

Almost surely, 2^42457407 is an apocalyptic number.

42457407 is a deficient number, since it is larger than the sum of its proper divisors (14241777).

42457407 is a wasteful number, since it uses less digits than its factorization.

42457407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22329.

The product of its (nonzero) digits is 31360, while the sum is 33.

The square root of 42457407 is about 6515.9348523447. The cubic root of 42457407 is about 348.8599832969.

The spelling of 42457407 in words is "forty-two million, four hundred fifty-seven thousand, four hundred seven".