40540156 has 6 divisors (see below), whose sum is σ = 70945280. Its totient is φ = 20270076.

The previous prime is 40540147. The next prime is 40540163. The reversal of 40540156 is 65104504.

It is a self number, because there is not a number n which added to its sum of digits gives 40540156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5067516 + ... + 5067523.

Almost surely, 2^40540156 is an apocalyptic number.

It is an amenable number.

40540156 is a deficient number, since it is larger than the sum of its proper divisors (30405124).

40540156 is a wasteful number, since it uses less digits than its factorization.

40540156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10135043 (or 10135041 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 40540156 is about 6367.1152023503. The cubic root of 40540156 is about 343.5277343987.

The spelling of 40540156 in words is "forty million, five hundred forty thousand, one hundred fifty-six".