142491013 has 16 divisors (see below), whose sum is σ = 173008000. Its totient is φ = 114633792.

The previous prime is 142491001. The next prime is 142491017. The reversal of 142491013 is 310194241.

It is a happy number.

It is not a de Polignac number, because 142491013 - 2⁹ = 142490501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142491017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9583 + ... + 19411.

It is an arithmetic number, because the mean of its divisors is an integer number (10813000).

Almost surely, 2^142491013 is an apocalyptic number.

It is an amenable number.

142491013 is a deficient number, since it is larger than the sum of its proper divisors (30516987).

142491013 is a wasteful number, since it uses less digits than its factorization.

142491013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9964.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 142491013 is about 11936.9599563708. The cubic root of 142491013 is about 522.3109828119.

The spelling of 142491013 in words is "one hundred forty-two million, four hundred ninety-one thousand, thirteen".