142943730 has 16 divisors (see below), whose sum is σ = 343065024. Its totient is φ = 38118320.

The previous prime is 142943729. The next prime is 142943737. The reversal of 142943730 is 37349241.

It is a junction number, because it is equal to n+sod(n) for n = 142943691 and 142943700.

It is not an unprimeable number, because it can be changed into a prime (142943737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2382366 + ... + 2382425.

It is an arithmetic number, because the mean of its divisors is an integer number (21441564).

Almost surely, 2^142943730 is an apocalyptic number.

142943730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142943730 is an abundant number, since it is smaller than the sum of its proper divisors (200121294).

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

142943730 is a wasteful number, since it uses less digits than its factorization.

142943730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4764801.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 142943730 is about 11955.9077447093. The cubic root of 142943730 is about 522.8635535190.

The spelling of 142943730 in words is "one hundred forty-two million, nine hundred forty-three thousand, seven hundred thirty".