261303442 has 8 divisors (see below), whose sum is σ = 393638076. Its totient is φ = 130090752.

The previous prime is 261303439. The next prime is 261303451. The reversal of 261303442 is 244303162.

261303442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 203376121 + 57927321 = 14261^2 + 7611^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279903 + ... + 280834.

Almost surely, 2^261303442 is an apocalyptic number.

261303442 is a deficient number, since it is larger than the sum of its proper divisors (132334634).

261303442 is a wasteful number, since it uses less digits than its factorization.

261303442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560972.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 261303442 is about 16164.8829875134. The cubic root of 261303442 is about 639.3152197159.

The spelling of 261303442 in words is "two hundred sixty-one million, three hundred three thousand, four hundred forty-two".