142780934 has 8 divisors (see below), whose sum is σ = 225443640. Its totient is φ = 67633056.

The previous prime is 142780933. The next prime is 142781021. The reversal of 142780934 is 439087241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×142780934² = 40772790227824712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 3757393 = 142780934 / (1 + 4 + 2 + 7 + 8 + 0 + 9 + 3 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142780933) 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, 1878659 + ... + 1878734.

It is an arithmetic number, because the mean of its divisors is an integer number (28180455).

Almost surely, 2^142780934 is an apocalyptic number.

142780934 is a deficient number, since it is larger than the sum of its proper divisors (82662706).

142780934 is a wasteful number, since it uses less digits than its factorization.

142780934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3757414.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 142780934 is about 11949.0976228333. The cubic root of 142780934 is about 522.6649848714.

The spelling of 142780934 in words is "one hundred forty-two million, seven hundred eighty thousand, nine hundred thirty-four".