30429021 has 8 divisors (see below), whose sum is σ = 46368064. Its totient is φ = 17388000.

The previous prime is 30429017. The next prime is 30429043. The reversal of 30429021 is 12092403.

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

It is not a de Polignac number, because 30429021 - 2² = 30429017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1449001 = 30429021 / (3 + 0 + 4 + 2 + 9 + 0 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30429121) 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, 724480 + ... + 724521.

It is an arithmetic number, because the mean of its divisors is an integer number (5796008).

Almost surely, 2^30429021 is an apocalyptic number.

It is an amenable number.

30429021 is a deficient number, since it is larger than the sum of its proper divisors (15939043).

30429021 is a wasteful number, since it uses less digits than its factorization.

30429021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449011.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 30429021 is about 5516.2506288239. The cubic root of 30429021 is about 312.1974321565.

The spelling of 30429021 in words is "thirty million, four hundred twenty-nine thousand, twenty-one".