261576742 has 16 divisors (see below), whose sum is σ = 454095360. Its totient is φ = 110684808.

The previous prime is 261576737. The next prime is 261576779. The reversal of 261576742 is 247675162.

It is a super-3 number, since 3×261576742³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 261576695 and 261576704.

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, 117148 + ... + 119359.

It is an arithmetic number, because the mean of its divisors is an integer number (28380960).

Almost surely, 2^261576742 is an apocalyptic number.

261576742 is a deficient number, since it is larger than the sum of its proper divisors (192518618).

261576742 is a wasteful number, since it uses less digits than its factorization.

261576742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236595.

The product of its digits is 141120, while the sum is 40.

The square root of 261576742 is about 16173.3342882660. The cubic root of 261576742 is about 639.5380308764.

The spelling of 261576742 in words is "two hundred sixty-one million, five hundred seventy-six thousand, seven hundred forty-two".