261123374 has 16 divisors (see below), whose sum is σ = 397807200. Its totient is φ = 128526720.

The previous prime is 261123367. The next prime is 261123407. The reversal of 261123374 is 473321162.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148082 + ... + 149834.

It is an arithmetic number, because the mean of its divisors is an integer number (24862950).

Almost surely, 2^261123374 is an apocalyptic number.

261123374 is a deficient number, since it is larger than the sum of its proper divisors (136683826).

261123374 is a wasteful number, since it uses less digits than its factorization.

261123374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2875.

The product of its digits is 6048, while the sum is 29.

The square root of 261123374 is about 16159.3122997236. The cubic root of 261123374 is about 639.1683321665.

The spelling of 261123374 in words is "two hundred sixty-one million, one hundred twenty-three thousand, three hundred seventy-four".