142777013 has 4 divisors (see below), whose sum is σ = 142966380. Its totient is φ = 142587648.

The previous prime is 142777007. The next prime is 142777049. The reversal of 142777013 is 310777241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310777241 = 1283 ⋅242227.

It can be written as a sum of positive squares in 2 ways, for example, as 92891044 + 49885969 = 9638^2 + 7063^2 .

It is a cyclic number.

It is not a de Polignac number, because 142777013 - 2¹⁶ = 142711477 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 (142773013) 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, 93548 + ... + 95061.

It is an arithmetic number, because the mean of its divisors is an integer number (35741595).

Almost surely, 2^142777013 is an apocalyptic number.

It is an amenable number.

142777013 is a deficient number, since it is larger than the sum of its proper divisors (189367).

142777013 is an equidigital number, since it uses as much as digits as its factorization.

142777013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189366.

The product of its (nonzero) digits is 8232, while the sum is 32.

The square root of 142777013 is about 11948.9335507400. The cubic root of 142777013 is about 522.6602004134.

The spelling of 142777013 in words is "one hundred forty-two million, seven hundred seventy-seven thousand, thirteen".