42154018 has 16 divisors (see below), whose sum is σ = 66084480. Its totient is φ = 20146896.

The previous prime is 42154003. The next prime is 42154019. The reversal of 42154018 is 81045124.

It is a super-2 number, since 2×42154018² = 3553922467088648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42153983 and 42154001.

It is not an unprimeable number, because it can be changed into a prime (42154019) 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, 1173 + ... + 9256.

It is an arithmetic number, because the mean of its divisors is an integer number (4130280).

Almost surely, 2^42154018 is an apocalyptic number.

42154018 is a deficient number, since it is larger than the sum of its proper divisors (23930462).

42154018 is a wasteful number, since it uses less digits than its factorization.

42154018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10521.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 42154018 is about 6492.6125712228. The cubic root of 42154018 is about 348.0270435231.

The spelling of 42154018 in words is "forty-two million, one hundred fifty-four thousand, eighteen".