7481420136 has 48 divisors (see below), whose sum is σ = 20506318560. Its totient is φ = 2463758880.

The previous prime is 7481420131. The next prime is 7481420137. The reversal of 7481420136 is 6310241847.

7481420136 is a `hidden beast` number, since 7 + 481 + 42 + 0 + 136 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 7481420136.

It is not an unprimeable number, because it can be changed into a prime (7481420131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 619980 + ... + 631931.

It is an arithmetic number, because the mean of its divisors is an integer number (427214970).

Almost surely, 2^7481420136 is an apocalyptic number.

It is an amenable number.

7481420136 is an abundant number, since it is smaller than the sum of its proper divisors (13024898424).

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

7481420136 is a wasteful number, since it uses less digits than its factorization.

7481420136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252006 (or 1251999 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 7481420136 is about 86495.2029652512. The cubic root of 7481420136 is about 1955.8160904534.

The spelling of 7481420136 in words is "seven billion, four hundred eighty-one million, four hundred twenty thousand, one hundred thirty-six".