42154231 has 8 divisors (see below), whose sum is σ = 48263040. Its totient is φ = 36067128.

The previous prime is 42154223. The next prime is 42154243. The reversal of 42154231 is 13245124.

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 42154231 - 2³ = 42154223 is a prime.

It is a super-2 number, since 2×42154231² = 3553958382402722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42154291) 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, 1021 + ... + 9238.

It is an arithmetic number, because the mean of its divisors is an integer number (6032880).

Almost surely, 2^42154231 is an apocalyptic number.

42154231 is a deficient number, since it is larger than the sum of its proper divisors (6108809).

42154231 is a wasteful number, since it uses less digits than its factorization.

42154231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10853.

The product of its digits is 960, while the sum is 22.

The square root of 42154231 is about 6492.6289744602. The cubic root of 42154231 is about 348.0276297039.

Adding to 42154231 its reverse (13245124), we get a palindrome (55399355).

The spelling of 42154231 in words is "forty-two million, one hundred fifty-four thousand, two hundred thirty-one".