30142509 has 8 divisors (see below), whose sum is σ = 41486592. Its totient is φ = 19446720.

The previous prime is 30142507. The next prime is 30142543. The reversal of 30142509 is 90524103.

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

It is not a de Polignac number, because 30142509 - 2¹ = 30142507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30142501) 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, 161964 + ... + 162149.

It is an arithmetic number, because the mean of its divisors is an integer number (5185824).

Almost surely, 2^30142509 is an apocalyptic number.

It is an amenable number.

30142509 is a deficient number, since it is larger than the sum of its proper divisors (11344083).

30142509 is a wasteful number, since it uses less digits than its factorization.

30142509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324147.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 30142509 is about 5490.2193945233. The cubic root of 30142509 is about 311.2144831330.

The spelling of 30142509 in words is "thirty million, one hundred forty-two thousand, five hundred nine".