142902551 has 4 divisors (see below), whose sum is σ = 155893704. Its totient is φ = 129911400.

The previous prime is 142902521. The next prime is 142902563. The reversal of 142902551 is 155209241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142902551 - 2¹⁴ = 142886167 is a prime.

It is a super-2 number, since 2×142902551² = 40842278164615202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142902521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6495560 + ... + 6495581.

It is an arithmetic number, because the mean of its divisors is an integer number (38973426).

Almost surely, 2^142902551 is an apocalyptic number.

142902551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

142902551 is a deficient number, since it is larger than the sum of its proper divisors (12991153).

142902551 is a wasteful number, since it uses less digits than its factorization.

142902551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12991152.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 142902551 is about 11954.1855013213. The cubic root of 142902551 is about 522.8133401328.

The spelling of 142902551 in words is "one hundred forty-two million, nine hundred two thousand, five hundred fifty-one".