40040146 has 8 divisors (see below), whose sum is σ = 61338240. Its totient is φ = 19594068.

The previous prime is 40040141. The next prime is 40040153. The reversal of 40040146 is 64104004.

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

It is not an unprimeable number, because it can be changed into a prime (40040141) 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, 212886 + ... + 213073.

It is an arithmetic number, because the mean of its divisors is an integer number (7667280).

Almost surely, 2^40040146 is an apocalyptic number.

40040146 is a deficient number, since it is larger than the sum of its proper divisors (21298094).

40040146 is a wasteful number, since it uses less digits than its factorization.

40040146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426008.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 40040146 is about 6327.7283443587. The cubic root of 40040146 is about 342.1095655699.

It can be divided in two parts, 40040 and 146, that added together give a triangular number (40186 = T₂₈₃).

The spelling of 40040146 in words is "forty million, forty thousand, one hundred forty-six".