142351877 has 4 divisors (see below), whose sum is σ = 145823916. Its totient is φ = 138879840.

The previous prime is 142351873. The next prime is 142351879. The reversal of 142351877 is 778153241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 778153241 = 43 ⋅18096587.

It can be written as a sum of positive squares in 2 ways, for example, as 70543201 + 71808676 = 8399^2 + 8474^2 .

It is a cyclic number.

It is not a de Polignac number, because 142351877 - 2² = 142351873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142351877.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142351873) 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, 1735958 + ... + 1736039.

It is an arithmetic number, because the mean of its divisors is an integer number (36455979).

Almost surely, 2^142351877 is an apocalyptic number.

It is an amenable number.

142351877 is a deficient number, since it is larger than the sum of its proper divisors (3472039).

142351877 is an equidigital number, since it uses as much as digits as its factorization.

142351877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3472038.

The product of its digits is 47040, while the sum is 38.

The square root of 142351877 is about 11931.1305834778. The cubic root of 142351877 is about 522.1409231337.

The spelling of 142351877 in words is "one hundred forty-two million, three hundred fifty-one thousand, eight hundred seventy-seven".