7942421475 has 36 divisors (see below), whose sum is σ = 14397187896. Its totient is φ = 4184912640.

The previous prime is 7942421449. The next prime is 7942421489. The reversal of 7942421475 is 5741242497.

7942421475 is a `hidden beast` number, since 7 + 9 + 424 + 214 + 7 + 5 = 666.

It is not a de Polignac number, because 7942421475 - 2⁹ = 7942420963 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 7942421475.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 193974 + ... + 231323.

It is an arithmetic number, because the mean of its divisors is an integer number (399921886).

Almost surely, 2^7942421475 is an apocalyptic number.

7942421475 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

7942421475 is a deficient number, since it is larger than the sum of its proper divisors (6454766421).

7942421475 is a wasteful number, since it uses less digits than its factorization.

7942421475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425396 (or 425388 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 7942421475 is about 89120.2641097972. The cubic root of 7942421475 is about 1995.1902319212.

The spelling of 7942421475 in words is "seven billion, nine hundred forty-two million, four hundred twenty-one thousand, four hundred seventy-five".