40658942 has 8 divisors (see below), whose sum is σ = 61226496. Its totient is φ = 20250112.

The previous prime is 40658939. The next prime is 40658977. The reversal of 40658942 is 24985604.

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

It is a super-3 number, since 3×40658942³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40658896 and 40658905.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 39038 + ... + 40065.

It is an arithmetic number, because the mean of its divisors is an integer number (7653312).

Almost surely, 2^40658942 is an apocalyptic number.

40658942 is a deficient number, since it is larger than the sum of its proper divisors (20567554).

40658942 is a wasteful number, since it uses less digits than its factorization.

40658942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79362.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 40658942 is about 6376.4364656131. The cubic root of 40658942 is about 343.8629287588.

The spelling of 40658942 in words is "forty million, six hundred fifty-eight thousand, nine hundred forty-two".