40662140 has 24 divisors (see below), whose sum is σ = 86193072. Its totient is φ = 16112000.

The previous prime is 40662131. The next prime is 40662187. The reversal of 40662140 is 4126604.

It is a happy number.

It is a congruent number.

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, 7361 + ... + 11640.

It is an arithmetic number, because the mean of its divisors is an integer number (3591378).

Almost surely, 2^40662140 is an apocalyptic number.

It is an amenable number.

40662140 is an abundant number, since it is smaller than the sum of its proper divisors (45530932).

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

40662140 is a wasteful number, since it uses less digits than its factorization.

40662140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19117 (or 19115 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 40662140 is about 6376.6872277069. The cubic root of 40662140 is about 343.8719439534.

Adding to 40662140 its reverse (4126604), we get a palindrome (44788744).

The spelling of 40662140 in words is "forty million, six hundred sixty-two thousand, one hundred forty".