242271390 has 32 divisors (see below), whose sum is σ = 583331616. Its totient is φ = 64396800.

The previous prime is 242271377. The next prime is 242271391. The reversal of 242271390 is 93172242.

242271390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242271391) 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, 3511 + ... + 22290.

It is an arithmetic number, because the mean of its divisors is an integer number (18229113).

Almost surely, 2^242271390 is an apocalyptic number.

242271390 is an abundant number, since it is smaller than the sum of its proper divisors (341060226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242271390 is a wasteful number, since it uses less digits than its factorization.

242271390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26124.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 242271390 is about 15565.0695469053. The cubic root of 242271390 is about 623.4008312112.

The spelling of 242271390 in words is "two hundred forty-two million, two hundred seventy-one thousand, three hundred ninety".