1242574752421 has 16 divisors (see below), whose sum is σ = 1272976646400. Its totient is φ = 1212539328000.

The previous prime is 1242574752407. The next prime is 1242574752457.

1242574752421 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 1242574752421 - 2¹⁷ = 1242574621349 is a prime.

It is a super-2 number, since 2×1242574752421² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242574762421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22697560 + ... + 22752238.

It is an arithmetic number, because the mean of its divisors is an integer number (79561040400).

Almost surely, 2^{1242574752421} is an apocalyptic number.

It is an amenable number.

1242574752421 is a deficient number, since it is larger than the sum of its proper divisors (30401893979).

1242574752421 is a wasteful number, since it uses less digits than its factorization.

1242574752421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58020.

The product of its digits is 1254400, while the sum is 46.

The spelling of 1242574752421 in words is "one trillion, two hundred forty-two billion, five hundred seventy-four million, seven hundred fifty-two thousand, four hundred twenty-one".