42425978 has 16 divisors (see below), whose sum is σ = 72888000. Its totient is φ = 18143136.

The previous prime is 42425969. The next prime is 42425987. The reversal of 42425978 is 87952424.

It is an interprime number because it is at equal distance from previous prime (42425969) and next prime (42425987).

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, 3950 + ... + 10022.

It is an arithmetic number, because the mean of its divisors is an integer number (4555500).

Almost surely, 2^42425978 is an apocalyptic number.

42425978 is a deficient number, since it is larger than the sum of its proper divisors (30462022).

42425978 is a wasteful number, since it uses less digits than its factorization.

42425978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6581.

The product of its digits is 161280, while the sum is 41.

The square root of 42425978 is about 6513.5227028084. The cubic root of 42425978 is about 348.7738811086.

The spelling of 42425978 in words is "forty-two million, four hundred twenty-five thousand, nine hundred seventy-eight".