260921973042 has 36 divisors (see below), whose sum is σ = 579150302094. Its totient is φ = 84848161440.

The previous prime is 260921973031. The next prime is 260921973047. The reversal of 260921973042 is 240379129062.

260921973042 is a `hidden beast` number, since 2 + 609 + 2 + 1 + 9 + 7 + 30 + 4 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 257739997761 + 3181975281 = 507681^2 + 56409^2 .

It is a super-2 number, since 2×260921973042² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (260921973047) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13867213 + ... + 13886015.

Almost surely, 2^260921973042 is an apocalyptic number.

260921973042 is an abundant number, since it is smaller than the sum of its proper divisors (318228329052).

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

260921973042 is an frugal number, since it uses more digits than its factorization.

260921973042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37655 (or 18849 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 260921973042 in words is "two hundred sixty billion, nine hundred twenty-one million, nine hundred seventy-three thousand, forty-two".