266687142 has 16 divisors (see below), whose sum is σ = 534567600. Its totient is φ = 88696832.

The previous prime is 266687129. The next prime is 266687171. The reversal of 266687142 is 241786662.

It is a super-2 number, since 2×266687142² = 142244063416256328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 266687094 and 266687103.

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, 46803 + ... + 52190.

It is an arithmetic number, because the mean of its divisors is an integer number (33410475).

Almost surely, 2^266687142 is an apocalyptic number.

266687142 is an abundant number, since it is smaller than the sum of its proper divisors (267880458).

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

266687142 is a wasteful number, since it uses less digits than its factorization.

266687142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99447.

The product of its digits is 193536, while the sum is 42.

The square root of 266687142 is about 16330.5585330080. The cubic root of 266687142 is about 643.6760632463.

The spelling of 266687142 in words is "two hundred sixty-six million, six hundred eighty-seven thousand, one hundred forty-two".