40142146 has 16 divisors (see below), whose sum is σ = 65939328. Its totient is φ = 18176400.

The previous prime is 40142143. The next prime is 40142149. The reversal of 40142146 is 64124104.

It is an interprime number because it is at equal distance from previous prime (40142143) and next prime (40142149).

It is a super-2 number, since 2×40142146² = 3222783770970632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (40142143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2596 + ... + 9328.

It is an arithmetic number, because the mean of its divisors is an integer number (4121208).

Almost surely, 2^40142146 is an apocalyptic number.

40142146 is a deficient number, since it is larger than the sum of its proper divisors (25797182).

40142146 is a wasteful number, since it uses less digits than its factorization.

40142146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7017.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 40142146 is about 6335.7829823945. The cubic root of 40142146 is about 342.3998208085.

The spelling of 40142146 in words is "forty million, one hundred forty-two thousand, one hundred forty-six".