30420545 has 8 divisors (see below), whose sum is σ = 36669696. Its totient is φ = 24226416.

The previous prime is 30420529. The next prime is 30420547. The reversal of 30420545 is 54502403.

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 30420545 - 2⁴ = 30420529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30420545.

It is not an unprimeable number, because it can be changed into a prime (30420547) 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, 12527 + ... + 14756.

It is an arithmetic number, because the mean of its divisors is an integer number (4583712).

Almost surely, 2^30420545 is an apocalyptic number.

It is an amenable number.

30420545 is a deficient number, since it is larger than the sum of its proper divisors (6249151).

30420545 is a wasteful number, since it uses less digits than its factorization.

30420545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27511.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 30420545 is about 5515.4822998537. The cubic root of 30420545 is about 312.1684419460.

Adding to 30420545 its reverse (54502403), we get a palindrome (84922948).

The spelling of 30420545 in words is "thirty million, four hundred twenty thousand, five hundred forty-five".