30045642 has 16 divisors (see below), whose sum is σ = 65554272. Its totient is φ = 9104720.

The previous prime is 30045629. The next prime is 30045649. The reversal of 30045642 is 24654003.

It is not an unprimeable number, because it can be changed into a prime (30045649) 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, 227553 + ... + 227684.

It is an arithmetic number, because the mean of its divisors is an integer number (4097142).

Almost surely, 2^30045642 is an apocalyptic number.

30045642 is an abundant number, since it is smaller than the sum of its proper divisors (35508630).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30045642 is a wasteful number, since it uses less digits than its factorization.

30045642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455253.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 30045642 is about 5481.3905170130. The cubic root of 30045642 is about 310.8807488676.

Adding to 30045642 its reverse (24654003), we get a palindrome (54699645).

It can be divided in two parts, 3004 and 5642, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 30045642 in words is "thirty million, forty-five thousand, six hundred forty-two".