142449877 has 4 divisors (see below), whose sum is σ = 144253120. Its totient is φ = 140646636.

The previous prime is 142449869. The next prime is 142449883. The reversal of 142449877 is 778944241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 778944241 = 97 ⋅8030353.

It is a cyclic number.

It is not a de Polignac number, because 142449877 - 2³ = 142449869 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 (142449887) 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, 901503 + ... + 901660.

It is an arithmetic number, because the mean of its divisors is an integer number (36063280).

Almost surely, 2^142449877 is an apocalyptic number.

It is an amenable number.

142449877 is a deficient number, since it is larger than the sum of its proper divisors (1803243).

142449877 is an equidigital number, since it uses as much as digits as its factorization.

142449877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1803242.

The product of its digits is 451584, while the sum is 46.

The square root of 142449877 is about 11935.2367802235. The cubic root of 142449877 is about 522.2607156593.

The spelling of 142449877 in words is "one hundred forty-two million, four hundred forty-nine thousand, eight hundred seventy-seven".