266612742 has 32 divisors (see below), whose sum is σ = 646335360. Its totient is φ = 80791560.

The previous prime is 266612729. The next prime is 266612767. The reversal of 266612742 is 247216662.

It is a junction number, because it is equal to n+sod(n) for n = 266612697 and 266612706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223828 + ... + 225015.

It is an arithmetic number, because the mean of its divisors is an integer number (20197980).

Almost surely, 2^266612742 is an apocalyptic number.

266612742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

266612742 is an abundant number, since it is smaller than the sum of its proper divisors (379722618).

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

266612742 is a wasteful number, since it uses less digits than its factorization.

266612742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448865 (or 448859 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 266612742 is about 16328.2804361023. The cubic root of 266612742 is about 643.6162004012.

It can be divided in two parts, 26661 and 2742, that added together give a triangular number (29403 = T₂₄₂).

The spelling of 266612742 in words is "two hundred sixty-six million, six hundred twelve thousand, seven hundred forty-two".