1242421504 has 27 divisors (see below), whose sum is σ = 2481116043. Its totient is φ = 620928768.

The previous prime is 1242421501. The next prime is 1242421513. The reversal of 1242421504 is 4051242421.

The square root of 1242421504 is 35248.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×1242421504² = 3087222387203244032, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242421501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 562867 + ... + 565069.

Almost surely, 2^1242421504 is an apocalyptic number.

1242421504 is the 35248-th square number.

It is an amenable number.

1242421504 is a deficient number, since it is larger than the sum of its proper divisors (1238694539).

1242421504 is an frugal number, since it uses more digits than its factorization.

1242421504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4422 (or 2205 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The cubic root of 1242421504 is about 1075.0359473106.

Multiplying 1242421504 by its sum of digits (25), we get a square (31060537600 = 176240²).

Adding to 1242421504 its reverse (4051242421), we get a palindrome (5293663925).

The spelling of 1242421504 in words is "one billion, two hundred forty-two million, four hundred twenty-one thousand, five hundred four".