142778504 has 16 divisors (see below), whose sum is σ = 292047120. Its totient is φ = 64899280.

The previous prime is 142778479. The next prime is 142778507. The reversal of 142778504 is 405877241.

It is not an unprimeable number, because it can be changed into a prime (142778507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 811154 + ... + 811329.

It is an arithmetic number, because the mean of its divisors is an integer number (18252945).

Almost surely, 2^142778504 is an apocalyptic number.

It is an amenable number.

142778504 is an abundant number, since it is smaller than the sum of its proper divisors (149268616).

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

142778504 is a wasteful number, since it uses less digits than its factorization.

142778504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1622500 (or 1622496 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 142778504 is about 11948.9959410822. The cubic root of 142778504 is about 522.6620197624.

The spelling of 142778504 in words is "one hundred forty-two million, seven hundred seventy-eight thousand, five hundred four".