261334442 has 4 divisors (see below), whose sum is σ = 392001666. Its totient is φ = 130667220.

The previous prime is 261334439. The next prime is 261334471. The reversal of 261334442 is 244433162.

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

It can be written as a sum of positive squares in only one way, i.e., 218418841 + 42915601 = 14779^2 + 6551^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65333609 + ... + 65333612.

Almost surely, 2^261334442 is an apocalyptic number.

261334442 is a deficient number, since it is larger than the sum of its proper divisors (130667224).

261334442 is a wasteful number, since it uses less digits than its factorization.

261334442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130667223.

The product of its digits is 13824, while the sum is 29.

The square root of 261334442 is about 16165.8418277552. The cubic root of 261334442 is about 639.3405006537.

The spelling of 261334442 in words is "two hundred sixty-one million, three hundred thirty-four thousand, four hundred forty-two".