40858942 has 4 divisors (see below), whose sum is σ = 61288416. Its totient is φ = 20429470.

The previous prime is 40858927. The next prime is 40858943. The reversal of 40858942 is 24985804.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 40858895 and 40858904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40858943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10214734 + ... + 10214737.

It is an arithmetic number, because the mean of its divisors is an integer number (15322104).

Almost surely, 2^40858942 is an apocalyptic number.

40858942 is a deficient number, since it is larger than the sum of its proper divisors (20429474).

40858942 is a wasteful number, since it uses less digits than its factorization.

40858942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20429473.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 40858942 is about 6392.0999679292. The cubic root of 40858942 is about 344.4258236282.

The spelling of 40858942 in words is "forty million, eight hundred fifty-eight thousand, nine hundred forty-two".