142004649 has 8 divisors (see below), whose sum is σ = 192912192. Its totient is φ = 92883440.

The previous prime is 142004641. The next prime is 142004663. The reversal of 142004649 is 946400241.

142004649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 142004649 - 2³ = 142004641 is a prime.

It is a super-2 number, since 2×142004649² = 40330640675226402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142004641) 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, 446397 + ... + 446714.

It is an arithmetic number, because the mean of its divisors is an integer number (24114024).

Almost surely, 2^142004649 is an apocalyptic number.

It is an amenable number.

142004649 is a deficient number, since it is larger than the sum of its proper divisors (50907543).

142004649 is an equidigital number, since it uses as much as digits as its factorization.

142004649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893167.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 142004649 is about 11916.5703539231. The cubic root of 142004649 is about 521.7160380664.

The spelling of 142004649 in words is "one hundred forty-two million, four thousand, six hundred forty-nine".