40979142 has 32 divisors (see below), whose sum is σ = 91301760. Its totient is φ = 13624200.

The previous prime is 40979137. The next prime is 40979161. The reversal of 40979142 is 24197904.

It is a junction number, because it is equal to n+sod(n) for n = 40979097 and 40979106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27517 + ... + 28967.

It is an arithmetic number, because the mean of its divisors is an integer number (2853180).

Almost surely, 2^40979142 is an apocalyptic number.

40979142 is an abundant number, since it is smaller than the sum of its proper divisors (50322618).

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

40979142 is a wasteful number, since it uses less digits than its factorization.

40979142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985 (or 1979 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 40979142 is about 6401.4952940700. The cubic root of 40979142 is about 344.7632402048.

The spelling of 40979142 in words is "forty million, nine hundred seventy-nine thousand, one hundred forty-two".