142091493 has 8 divisors (see below), whose sum is σ = 197692608. Its totient is φ = 90609024.

The previous prime is 142091473. The next prime is 142091497. The reversal of 142091493 is 394190241.

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

It is not a de Polignac number, because 142091493 - 2⁸ = 142091237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142091497) 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, 1029580 + ... + 1029717.

It is an arithmetic number, because the mean of its divisors is an integer number (24711576).

Almost surely, 2^142091493 is an apocalyptic number.

It is an amenable number.

142091493 is a deficient number, since it is larger than the sum of its proper divisors (55601115).

142091493 is a wasteful number, since it uses less digits than its factorization.

142091493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059323.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 142091493 is about 11920.2136306360. The cubic root of 142091493 is about 521.8223695021.

The spelling of 142091493 in words is "one hundred forty-two million, ninety-one thousand, four hundred ninety-three".