42154257 has 8 divisors (see below), whose sum is σ = 56491776. Its totient is φ = 27959792.

The previous prime is 42154243. The next prime is 42154267. The reversal of 42154257 is 75245124.

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

It is a cyclic number.

It is not a de Polignac number, because 42154257 - 2⁸ = 42154001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42154267) 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, 35073 + ... + 36254.

It is an arithmetic number, because the mean of its divisors is an integer number (7061472).

Almost surely, 2^42154257 is an apocalyptic number.

It is an amenable number.

42154257 is a deficient number, since it is larger than the sum of its proper divisors (14337519).

42154257 is a wasteful number, since it uses less digits than its factorization.

42154257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71527.

The product of its digits is 11200, while the sum is 30.

The square root of 42154257 is about 6492.6309767305. The cubic root of 42154257 is about 348.0277012564.

The spelling of 42154257 in words is "forty-two million, one hundred fifty-four thousand, two hundred fifty-seven".