42938457 has 8 divisors (see below), whose sum is σ = 58057920. Its totient is φ = 28222320.

The previous prime is 42938453. The next prime is 42938459. The reversal of 42938457 is 75483924.

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

It is not a de Polignac number, because 42938457 - 2² = 42938453 is a prime.

It is a super-2 number, since 2×42938457² = 3687422179081698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42938453) 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, 100582 + ... + 101007.

It is an arithmetic number, because the mean of its divisors is an integer number (7257240).

Almost surely, 2^42938457 is an apocalyptic number.

It is an amenable number.

42938457 is a deficient number, since it is larger than the sum of its proper divisors (15119463).

42938457 is a wasteful number, since it uses less digits than its factorization.

42938457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201663.

The product of its digits is 241920, while the sum is 42.

The square root of 42938457 is about 6552.7442342884. The cubic root of 42938457 is about 350.1725869912.

The spelling of 42938457 in words is "forty-two million, nine hundred thirty-eight thousand, four hundred fifty-seven".