1242588479 has 4 divisors (see below), whose sum is σ = 1355551080. Its totient is φ = 1129625880.

The previous prime is 1242588461. The next prime is 1242588481. The reversal of 1242588479 is 9748852421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1242588479 - 2¹⁶ = 1242522943 is a prime.

It is a super-2 number, since 2×1242588479² = 3088052256287066882, which 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 (1242588419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56481284 + ... + 56481305.

It is an arithmetic number, because the mean of its divisors is an integer number (338887770).

Almost surely, 2^1242588479 is an apocalyptic number.

1242588479 is a deficient number, since it is larger than the sum of its proper divisors (112962601).

1242588479 is a wasteful number, since it uses less digits than its factorization.

1242588479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112962600.

The product of its digits is 1290240, while the sum is 50.

The square root of 1242588479 is about 35250.3684945278. The cubic root of 1242588479 is about 1075.0841049034.

The spelling of 1242588479 in words is "one billion, two hundred forty-two million, five hundred eighty-eight thousand, four hundred seventy-nine".