142264609 has 4 divisors (see below), whose sum is σ = 149752240. Its totient is φ = 134776980.

The previous prime is 142264589. The next prime is 142264643. The reversal of 142264609 is 906462241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142264609 - 2⁷ = 142264481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142264649) 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, 3743787 + ... + 3743824.

It is an arithmetic number, because the mean of its divisors is an integer number (37438060).

Almost surely, 2^142264609 is an apocalyptic number.

142264609 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

142264609 is a deficient number, since it is larger than the sum of its proper divisors (7487631).

142264609 is an equidigital number, since it uses as much as digits as its factorization.

142264609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7487630.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 142264609 is about 11927.4728672926. The cubic root of 142264609 is about 522.0342028254.

The spelling of 142264609 in words is "one hundred forty-two million, two hundred sixty-four thousand, six hundred nine".