30142534 has 8 divisors (see below), whose sum is σ = 45267768. Its totient is φ = 15053280.

The previous prime is 30142507. The next prime is 30142543. The reversal of 30142534 is 43524103.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6792 + ... + 10315.

It is an arithmetic number, because the mean of its divisors is an integer number (5658471).

Almost surely, 2^30142534 is an apocalyptic number.

30142534 is a deficient number, since it is larger than the sum of its proper divisors (15125234).

30142534 is a wasteful number, since it uses less digits than its factorization.

30142534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17990.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 30142534 is about 5490.2216712989. The cubic root of 30142534 is about 311.2145691727.

Adding to 30142534 its reverse (43524103), we get a palindrome (73666637).

The spelling of 30142534 in words is "thirty million, one hundred forty-two thousand, five hundred thirty-four".