142804969 has 4 divisors (see below), whose sum is σ = 150321040. Its totient is φ = 135288900.

The previous prime is 142804967. The next prime is 142804979. The reversal of 142804969 is 969408241.

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, and also an emirpimes, since its reverse is a distinct semiprime: 969408241 = 13883 ⋅69827.

It is a cyclic number.

It is not a de Polignac number, because 142804969 - 2¹ = 142804967 is a prime.

It is a super-2 number, since 2×142804969² = 40786518342181922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142804967) 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, 3758007 + ... + 3758044.

It is an arithmetic number, because the mean of its divisors is an integer number (37580260).

Almost surely, 2^142804969 is an apocalyptic number.

142804969 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

142804969 is a deficient number, since it is larger than the sum of its proper divisors (7516071).

142804969 is an equidigital number, since it uses as much as digits as its factorization.

142804969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7516070.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 142804969 is about 11950.1033049928. The cubic root of 142804969 is about 522.6943107945.

The spelling of 142804969 in words is "one hundred forty-two million, eight hundred four thousand, nine hundred sixty-nine".