40642067 has 8 divisors (see below), whose sum is σ = 41149680. Its totient is φ = 40137120.

The previous prime is 40642061. The next prime is 40642073. The reversal of 40642067 is 76024604.

It is an interprime number because it is at equal distance from previous prime (40642061) and next prime (40642073).

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

It is a cyclic number.

It is not a de Polignac number, because 40642067 - 2⁴ = 40642051 is a prime.

It is a super-2 number, since 2×40642067² = 3303555220064978, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40642061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61913 + ... + 62565.

It is an arithmetic number, because the mean of its divisors is an integer number (5143710).

Almost surely, 2^40642067 is an apocalyptic number.

40642067 is a deficient number, since it is larger than the sum of its proper divisors (507613).

40642067 is a wasteful number, since it uses less digits than its factorization.

40642067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 40642067 is about 6375.1130970360. The cubic root of 40642067 is about 343.8153501320.

The spelling of 40642067 in words is "forty million, six hundred forty-two thousand, sixty-seven".