66254142 has 16 divisors (see below), whose sum is σ = 135590400. Its totient is φ = 21571032.

The previous prime is 66254141. The next prime is 66254189. The reversal of 66254142 is 24145266.

It is a super-2 number, since 2×66254142² = 8779222664312328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66254141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128142 + ... + 128657.

It is an arithmetic number, because the mean of its divisors is an integer number (8474400).

Almost surely, 2^66254142 is an apocalyptic number.

66254142 is an abundant number, since it is smaller than the sum of its proper divisors (69336258).

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

66254142 is a wasteful number, since it uses less digits than its factorization.

66254142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256847.

The product of its digits is 11520, while the sum is 30.

The square root of 66254142 is about 8139.6647351104. The cubic root of 66254142 is about 404.6420492190.

The spelling of 66254142 in words is "sixty-six million, two hundred fifty-four thousand, one hundred forty-two".