266438142 has 24 divisors (see below), whose sum is σ = 578710080. Its totient is φ = 88593120.

The previous prime is 266438069. The next prime is 266438153. The reversal of 266438142 is 241834662.

266438142 is a `hidden beast` number, since 2 + 6 + 643 + 8 + 1 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 266438097 and 266438106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10734 + ... + 25457.

It is an arithmetic number, because the mean of its divisors is an integer number (24112920).

Almost surely, 2^266438142 is an apocalyptic number.

266438142 is an abundant number, since it is smaller than the sum of its proper divisors (312271938).

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

266438142 is a wasteful number, since it uses less digits than its factorization.

266438142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36608 (or 36605 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 266438142 is about 16322.9330085006. The cubic root of 266438142 is about 643.4756720734.

The spelling of 266438142 in words is "two hundred sixty-six million, four hundred thirty-eight thousand, one hundred forty-two".