42134657 has 4 divisors (see below), whose sum is σ = 42172416. Its totient is φ = 42096900.

The previous prime is 42134641. The next prime is 42134671. The reversal of 42134657 is 75643124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42134657 - 2⁴ = 42134641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42134627) 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, 17153 + ... + 19454.

It is an arithmetic number, because the mean of its divisors is an integer number (10543104).

Almost surely, 2^42134657 is an apocalyptic number.

It is an amenable number.

42134657 is a deficient number, since it is larger than the sum of its proper divisors (37759).

42134657 is a wasteful number, since it uses less digits than its factorization.

42134657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37758.

The product of its digits is 20160, while the sum is 32.

The square root of 42134657 is about 6491.1213977247. The cubic root of 42134657 is about 347.9737533603.

The spelling of 42134657 in words is "forty-two million, one hundred thirty-four thousand, six hundred fifty-seven".