2666520142 has 32 divisors (see below), whose sum is σ = 4975465824. Its totient is φ = 1053004800.

The previous prime is 2666520133. The next prime is 2666520161. The reversal of 2666520142 is 2410256662.

It is a super-2 number, since 2×2666520142² = 14220659335383400328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 2666520098 and 2666520107.

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, 269359 + ... + 279082.

It is an arithmetic number, because the mean of its divisors is an integer number (155483307).

Almost surely, 2^2666520142 is an apocalyptic number.

2666520142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2666520142 is a deficient number, since it is larger than the sum of its proper divisors (2308945682).

2666520142 is a wasteful number, since it uses less digits than its factorization.

2666520142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548484.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 2666520142 is about 51638.3592109587. The cubic root of 2666520142 is about 1386.6971496037.

It can be divided in two parts, 2666520 and 142, that added together give a palindrome (2666662).

The spelling of 2666520142 in words is "two billion, six hundred sixty-six million, five hundred twenty thousand, one hundred forty-two".