42878954 has 8 divisors (see below), whose sum is σ = 65041380. Its totient is φ = 21198496.

The previous prime is 42878933. The next prime is 42878971. The reversal of 42878954 is 45987824.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39400729 + 3478225 = 6277^2 + 1865^2 .

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

It is a super-2 number, since 2×42878954² = 3677209392268232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42878899 and 42878908.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120269 + ... + 120624.

Almost surely, 2^42878954 is an apocalyptic number.

42878954 is a deficient number, since it is larger than the sum of its proper divisors (22162426).

42878954 is a wasteful number, since it uses less digits than its factorization.

42878954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240984.

The product of its digits is 645120, while the sum is 47.

The square root of 42878954 is about 6548.2023487366. The cubic root of 42878954 is about 350.0107588529.

The spelling of 42878954 in words is "forty-two million, eight hundred seventy-eight thousand, nine hundred fifty-four".