261121094 has 16 divisors (see below), whose sum is σ = 422400048. Its totient is φ = 120349152.

The previous prime is 261121067. The next prime is 261121097. The reversal of 261121094 is 490121162.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261121097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13049 + ... + 26315.

It is an arithmetic number, because the mean of its divisors is an integer number (26400003).

Almost surely, 2^261121094 is an apocalyptic number.

261121094 is a deficient number, since it is larger than the sum of its proper divisors (161278954).

261121094 is a wasteful number, since it uses less digits than its factorization.

261121094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14039.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 261121094 is about 16159.2417520130. The cubic root of 261121094 is about 639.1664718606.

The spelling of 261121094 in words is "two hundred sixty-one million, one hundred twenty-one thousand, ninety-four".