40121406352 has 10 divisors (see below), whose sum is σ = 77735224838. Its totient is φ = 20060703168.

The previous prime is 40121406331. The next prime is 40121406361. The reversal of 40121406352 is 25360412104.

It can be written as a sum of positive squares in only one way, i.e., 39527801856 + 593604496 = 198816^2 + 24364^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40121406352.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1253793933 + ... + 1253793964.

Almost surely, 2^40121406352 is an apocalyptic number.

It is an amenable number.

40121406352 is a deficient number, since it is larger than the sum of its proper divisors (37613818486).

40121406352 is a wasteful number, since it uses less digits than its factorization.

40121406352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507587905 (or 2507587899 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 40121406352 its reverse (25360412104), we get a palindrome (65481818456).

The spelling of 40121406352 in words is "forty billion, one hundred twenty-one million, four hundred six thousand, three hundred fifty-two".