242139475 has 6 divisors (see below), whose sum is σ = 300252980. Its totient is φ = 193711560.

The previous prime is 242139461. The next prime is 242139487. The reversal of 242139475 is 574931242.

It is not a de Polignac number, because 242139475 - 2¹³ = 242131283 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4842765 + ... + 4842814.

Almost surely, 2^242139475 is an apocalyptic number.

242139475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

242139475 is a deficient number, since it is larger than the sum of its proper divisors (58113505).

242139475 is an equidigital number, since it uses as much as digits as its factorization.

242139475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9685589 (or 9685584 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 242139475 is about 15560.8314366553. The cubic root of 242139475 is about 623.2876649382.

The spelling of 242139475 in words is "two hundred forty-two million, one hundred thirty-nine thousand, four hundred seventy-five".