142628661 has 32 divisors (see below), whose sum is σ = 246432000. Its totient is φ = 81496800.

The previous prime is 142628659. The next prime is 142628663. The reversal of 142628661 is 166826241.

It is an interprime number because it is at equal distance from previous prime (142628659) and next prime (142628663).

It is not a de Polignac number, because 142628661 - 2¹ = 142628659 is a prime.

It is a super-3 number, since 3×142628661³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142628663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1561 + ... + 16961.

It is an arithmetic number, because the mean of its divisors is an integer number (7701000).

Almost surely, 2^142628661 is an apocalyptic number.

It is an amenable number.

142628661 is a deficient number, since it is larger than the sum of its proper divisors (103803339).

142628661 is an equidigital number, since it uses as much as digits as its factorization.

142628661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15431 (or 15411 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 142628661 is about 11942.7241867172. The cubic root of 142628661 is about 522.4791148753.

The spelling of 142628661 in words is "one hundred forty-two million, six hundred twenty-eight thousand, six hundred sixty-one".