42147954 has 24 divisors (see below), whose sum is σ = 91624572. Its totient is φ = 14002560.

The previous prime is 42147949. The next prime is 42147977. The reversal of 42147954 is 45974124.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 41254929 + 893025 = 6423^2 + 945^2 .

It is a super-2 number, since 2×42147954² = 3552900052772232, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1894 + ... + 9374.

Almost surely, 2^42147954 is an apocalyptic number.

42147954 is an abundant number, since it is smaller than the sum of its proper divisors (49476618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42147954 is a wasteful number, since it uses less digits than its factorization.

42147954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7802 (or 7799 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 42147954 is about 6492.1455621389. The cubic root of 42147954 is about 348.0103544283.

The spelling of 42147954 in words is "forty-two million, one hundred forty-seven thousand, nine hundred fifty-four".