261426373 has 8 divisors (see below), whose sum is σ = 288403416. Its totient is φ = 235430400.

The previous prime is 261426371. The next prime is 261426401. The reversal of 261426373 is 373624162.

261426373 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 4 ways, for example, as 6640929 + 254785444 = 2577^2 + 15962^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 261426373 - 2¹ = 261426371 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261426371) 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, 244708 + ... + 245773.

It is an arithmetic number, because the mean of its divisors is an integer number (36050427).

Almost surely, 2^261426373 is an apocalyptic number.

It is an amenable number.

261426373 is a deficient number, since it is larger than the sum of its proper divisors (26977043).

261426373 is a wasteful number, since it uses less digits than its factorization.

261426373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490535.

The product of its digits is 36288, while the sum is 34.

The square root of 261426373 is about 16168.6849496179. The cubic root of 261426373 is about 639.4154599288.

The spelling of 261426373 in words is "two hundred sixty-one million, four hundred twenty-six thousand, three hundred seventy-three".