40722642 has 16 divisors (see below), whose sum is σ = 90494880. Its totient is φ = 13574196.

The previous prime is 40722631. The next prime is 40722653. The reversal of 40722642 is 24622704.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40722631) and next prime (40722653).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 377008 + ... + 377115.

It is an arithmetic number, because the mean of its divisors is an integer number (5655930).

Almost surely, 2^40722642 is an apocalyptic number.

40722642 is an abundant number, since it is smaller than the sum of its proper divisors (49772238).

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

40722642 is a wasteful number, since it uses less digits than its factorization.

40722642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754134 (or 754128 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 40722642 is about 6381.4294636860. The cubic root of 40722642 is about 344.0424107167.

The spelling of 40722642 in words is "forty million, seven hundred twenty-two thousand, six hundred forty-two".