142769409 has 8 divisors (see below), whose sum is σ = 194409600. Its totient is φ = 93154416.

The previous prime is 142769387. The next prime is 142769413. The reversal of 142769409 is 904967241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142769409 - 2¹³ = 142761217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142769449) 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, 506134 + ... + 506415.

It is an arithmetic number, because the mean of its divisors is an integer number (24301200).

Almost surely, 2^142769409 is an apocalyptic number.

It is an amenable number.

142769409 is a deficient number, since it is larger than the sum of its proper divisors (51640191).

142769409 is a wasteful number, since it uses less digits than its factorization.

142769409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012599.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 142769409 is about 11948.6153591117. The cubic root of 142769409 is about 522.6509216585.

The spelling of 142769409 in words is "one hundred forty-two million, seven hundred sixty-nine thousand, four hundred nine".