7457600421 has 20 divisors (see below), whose sum is σ = 11196372000. Its totient is φ = 4946739336.

The previous prime is 7457600399. The next prime is 7457600461. The reversal of 7457600421 is 1240067547.

7457600421 is a `hidden beast` number, since 7 + 4 + 5 + 7 + 600 + 42 + 1 = 666.

It is not a de Polignac number, because 7457600421 - 2⁵ = 7457600389 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7457600461) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 215211 + ... + 247448.

It is an arithmetic number, because the mean of its divisors is an integer number (559818600).

Almost surely, 2^7457600421 is an apocalyptic number.

It is an amenable number.

7457600421 is a deficient number, since it is larger than the sum of its proper divisors (3738771579).

7457600421 is a wasteful number, since it uses less digits than its factorization.

7457600421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462870 (or 462861 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 7457600421 is about 86357.3993413419. The cubic root of 7457600421 is about 1953.7382090424.

Adding to 7457600421 its reverse (1240067547), we get a palindrome (8697667968).

The spelling of 7457600421 in words is "seven billion, four hundred fifty-seven million, six hundred thousand, four hundred twenty-one".