142790293 has 4 divisors (see below), whose sum is σ = 151189740. Its totient is φ = 134390848.

The previous prime is 142790273. The next prime is 142790299. The reversal of 142790293 is 392097241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 106874244 + 35916049 = 10338^2 + 5993^2 .

It is not a de Polignac number, because 142790293 - 2⁹ = 142789781 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 (142790299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4199698 + ... + 4199731.

It is an arithmetic number, because the mean of its divisors is an integer number (37797435).

Almost surely, 2^142790293 is an apocalyptic number.

It is an amenable number.

142790293 is a deficient number, since it is larger than the sum of its proper divisors (8399447).

142790293 is an equidigital number, since it uses as much as digits as its factorization.

142790293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8399446.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 142790293 is about 11949.4892359464. The cubic root of 142790293 is about 522.6764044977.

The spelling of 142790293 in words is "one hundred forty-two million, seven hundred ninety thousand, two hundred ninety-three".