42238155 has 8 divisors (see below), whose sum is σ = 67581072. Its totient is φ = 22527008.

The previous prime is 42238139. The next prime is 42238171. The reversal of 42238155 is 55183224.

It is an interprime number because it is at equal distance from previous prime (42238139) and next prime (42238171).

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 42238155 - 2⁴ = 42238139 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1407924 + ... + 1407953.

It is an arithmetic number, because the mean of its divisors is an integer number (8447634).

Almost surely, 2^42238155 is an apocalyptic number.

42238155 is a deficient number, since it is larger than the sum of its proper divisors (25342917).

42238155 is a wasteful number, since it uses less digits than its factorization.

42238155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2815885.

The product of its digits is 9600, while the sum is 30.

The square root of 42238155 is about 6499.0887822833. The cubic root of 42238155 is about 348.2584369752.

The spelling of 42238155 in words is "forty-two million, two hundred thirty-eight thousand, one hundred fifty-five".