40140506 has 12 divisors (see below), whose sum is σ = 70041258. Its totient is φ = 17203032.

The previous prime is 40140493. The next prime is 40140511. The reversal of 40140506 is 60504104.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 40132225 + 8281 = 6335^2 + 91^2 .

It is a super-2 number, since 2×40140506² = 3222520443872072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 204701 + ... + 204896.

Almost surely, 2^40140506 is an apocalyptic number.

40140506 is a deficient number, since it is larger than the sum of its proper divisors (29900752).

40140506 is a wasteful number, since it uses less digits than its factorization.

40140506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409613 (or 409606 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 40140506 is about 6335.6535574477. The cubic root of 40140506 is about 342.3951578511.

The spelling of 40140506 in words is "forty million, one hundred forty thousand, five hundred six".