30142929 has 4 divisors (see below), whose sum is σ = 40190576. Its totient is φ = 20095284.

The previous prime is 30142927. The next prime is 30142951. The reversal of 30142929 is 92924103.

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.

It is not a de Polignac number, because 30142929 - 2¹ = 30142927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30142896 and 30142905.

It is not an unprimeable number, because it can be changed into a prime (30142927) 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, 5023819 + ... + 5023824.

It is an arithmetic number, because the mean of its divisors is an integer number (10047644).

Almost surely, 2^30142929 is an apocalyptic number.

It is an amenable number.

30142929 is a deficient number, since it is larger than the sum of its proper divisors (10047647).

30142929 is a wasteful number, since it uses less digits than its factorization.

30142929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10047646.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 30142929 is about 5490.2576442276. The cubic root of 30142929 is about 311.2159285941.

The spelling of 30142929 in words is "thirty million, one hundred forty-two thousand, nine hundred twenty-nine".