142977852 has 24 divisors (see below), whose sum is σ = 370683600. Its totient is φ = 47659248.

The previous prime is 142977851. The next prime is 142977889. The reversal of 142977852 is 258779241.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 142977798 and 142977807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142977851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 661827 + ... + 662042.

It is an arithmetic number, because the mean of its divisors is an integer number (15445150).

Almost surely, 2^142977852 is an apocalyptic number.

142977852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

142977852 is an abundant number, since it is smaller than the sum of its proper divisors (227705748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142977852 is a wasteful number, since it uses less digits than its factorization.

142977852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323882 (or 1323874 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 142977852 is about 11957.3346528397. The cubic root of 142977852 is about 522.9051543427.

The spelling of 142977852 in words is "one hundred forty-two million, nine hundred seventy-seven thousand, eight hundred fifty-two".