40386542 has 8 divisors (see below), whose sum is σ = 69234096. Its totient is φ = 17308512.

The previous prime is 40386529. The next prime is 40386547. The reversal of 40386542 is 24568304.

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

It is a junction number, because it is equal to n+sod(n) for n = 40386499 and 40386508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40386547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1442363 + ... + 1442390.

It is an arithmetic number, because the mean of its divisors is an integer number (8654262).

Almost surely, 2^40386542 is an apocalyptic number.

40386542 is a deficient number, since it is larger than the sum of its proper divisors (28847554).

40386542 is a wasteful number, since it uses less digits than its factorization.

40386542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2884762.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 40386542 is about 6355.0406765024. The cubic root of 40386542 is about 343.0932889187.

The spelling of 40386542 in words is "forty million, three hundred eighty-six thousand, five hundred forty-two".