261342060 has 48 divisors (see below), whose sum is σ = 836295936. Its totient is φ = 59735232.

The previous prime is 261342041. The next prime is 261342079. The reversal of 261342060 is 60243162.

It is an interprime number because it is at equal distance from previous prime (261342041) and next prime (261342079).

It is a self number, because there is not a number n which added to its sum of digits gives 261342060.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310702 + ... + 311541.

It is an arithmetic number, because the mean of its divisors is an integer number (17422832).

Almost surely, 2^261342060 is an apocalyptic number.

261342060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261342060 is an abundant number, since it is smaller than the sum of its proper divisors (574953876).

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

261342060 is a wasteful number, since it uses less digits than its factorization.

261342060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622262 (or 622260 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 261342060 is about 16166.0774463071. The cubic root of 261342060 is about 639.3467129342.

The spelling of 261342060 in words is "two hundred sixty-one million, three hundred forty-two thousand, sixty".