242613890 has 16 divisors (see below), whose sum is σ = 455692608. Its totient is φ = 92826096.

The previous prime is 242613881. The next prime is 242613923. The reversal of 242613890 is 98316242.

It is a super-2 number, since 2×242613890² = 117722999241864200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 242613890.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527192 + ... + 527651.

It is an arithmetic number, because the mean of its divisors is an integer number (28480788).

Almost surely, 2^242613890 is an apocalyptic number.

242613890 is a deficient number, since it is larger than the sum of its proper divisors (213078718).

242613890 is a wasteful number, since it uses less digits than its factorization.

242613890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054873.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 242613890 is about 15576.0678606637. The cubic root of 242613890 is about 623.6944609406.

The spelling of 242613890 in words is "two hundred forty-two million, six hundred thirteen thousand, eight hundred ninety".