266423742 has 48 divisors (see below), whose sum is σ = 644694960. Its totient is φ = 81974592.

The previous prime is 266423741. The next prime is 266423747. The reversal of 266423742 is 247324662.

266423742 is a `hidden beast` number, since 2 + 6 + 642 + 3 + 7 + 4 + 2 = 666.

It is a super-2 number, since 2×266423742² = 141963220602565128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 266423697 and 266423706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266423741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14767 + ... + 27402.

It is an arithmetic number, because the mean of its divisors is an integer number (13431145).

Almost surely, 2^266423742 is an apocalyptic number.

266423742 is an abundant number, since it is smaller than the sum of its proper divisors (378271218).

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

266423742 is a wasteful number, since it uses less digits than its factorization.

266423742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42199 (or 42187 counting only the distinct ones).

The product of its digits is 96768, while the sum is 36.

The square root of 266423742 is about 16322.4919053434. The cubic root of 266423742 is about 643.4640793681.

The spelling of 266423742 in words is "two hundred sixty-six million, four hundred twenty-three thousand, seven hundred forty-two".