261411942 has 32 divisors (see below), whose sum is σ = 571348224. Its totient is φ = 79077600.

The previous prime is 261411929. The next prime is 261411961. The reversal of 261411942 is 249114162.

It is a super-2 number, since 2×261411942² = 136672406840422728, which contains 22 as substring.

It is a congruent number.

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, 38508 + ... + 44784.

It is an arithmetic number, because the mean of its divisors is an integer number (17854632).

Almost surely, 2^261411942 is an apocalyptic number.

261411942 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

261411942 is an abundant number, since it is smaller than the sum of its proper divisors (309936282).

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

261411942 is a wasteful number, since it uses less digits than its factorization.

261411942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6924.

The product of its digits is 3456, while the sum is 30.

The square root of 261411942 is about 16168.2386795841. The cubic root of 261411942 is about 639.4036942524.

The spelling of 261411942 in words is "two hundred sixty-one million, four hundred eleven thousand, nine hundred forty-two".