142390549 has 8 divisors (see below), whose sum is σ = 162808128. Its totient is φ = 121992000.

The previous prime is 142390519. The next prime is 142390553. The reversal of 142390549 is 945093241.

142390549 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 142390549 - 2¹⁷ = 142259477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142390519) 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, 19629 + ... + 25885.

It is an arithmetic number, because the mean of its divisors is an integer number (20351016).

Almost surely, 2^142390549 is an apocalyptic number.

It is an amenable number.

142390549 is a deficient number, since it is larger than the sum of its proper divisors (20417579).

142390549 is an equidigital number, since it uses as much as digits as its factorization.

142390549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9515.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 142390549 is about 11932.7511077706. The cubic root of 142390549 is about 522.1882012963.

The spelling of 142390549 in words is "one hundred forty-two million, three hundred ninety thousand, five hundred forty-nine".