30032542 has 4 divisors (see below), whose sum is σ = 45048816. Its totient is φ = 15016270.

The previous prime is 30032473. The next prime is 30032543. The reversal of 30032542 is 24523003.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30032543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7508134 + ... + 7508137.

It is an arithmetic number, because the mean of its divisors is an integer number (11262204).

Almost surely, 2^30032542 is an apocalyptic number.

30032542 is a deficient number, since it is larger than the sum of its proper divisors (15016274).

30032542 is a wasteful number, since it uses less digits than its factorization.

30032542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15016273.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 30032542 is about 5480.1954344713. The cubic root of 30032542 is about 310.8355606188.

Adding to 30032542 its reverse (24523003), we get a palindrome (54555545).

The spelling of 30032542 in words is "thirty million, thirty-two thousand, five hundred forty-two".