4542426621 has 40 divisors (see below), whose sum is σ = 7074236928. Its totient is φ = 2901420000.

The previous prime is 4542426617. The next prime is 4542426661. The reversal of 4542426621 is 1266242454.

4542426621 is a `hidden beast` number, since 4 + 5 + 4 + 2 + 4 + 26 + 621 = 666.

It is not a de Polignac number, because 4542426621 - 2² = 4542426617 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 (4542426611) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 244656 + ... + 262566.

Almost surely, 2^4542426621 is an apocalyptic number.

It is an amenable number.

4542426621 is a deficient number, since it is larger than the sum of its proper divisors (2531810307).

4542426621 is a wasteful number, since it uses less digits than its factorization.

4542426621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18055 (or 18046 counting only the distinct ones).

The product of its digits is 92160, while the sum is 36.

The square root of 4542426621 is about 67397.5268166422. The cubic root of 4542426621 is about 1656.1359076391.

The spelling of 4542426621 in words is "four billion, five hundred forty-two million, four hundred twenty-six thousand, six hundred twenty-one".