30142493 has 8 divisors (see below), whose sum is σ = 31785600. Its totient is φ = 28505088.

The previous prime is 30142481. The next prime is 30142501. The reversal of 30142493 is 39424103.

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

It is a cyclic number.

It is not a de Polignac number, because 30142493 - 2⁴ = 30142477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30142403) 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, 13580 + ... + 15642.

It is an arithmetic number, because the mean of its divisors is an integer number (3973200).

Almost surely, 2^30142493 is an apocalyptic number.

It is an amenable number.

30142493 is a deficient number, since it is larger than the sum of its proper divisors (1643107).

30142493 is a wasteful number, since it uses less digits than its factorization.

30142493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 30142493 is about 5490.2179373865. The cubic root of 30142493 is about 311.2144280675.

Adding to 30142493 its reverse (39424103), we get a palindrome (69566596).

The spelling of 30142493 in words is "thirty million, one hundred forty-two thousand, four hundred ninety-three".