45120006421 has 16 divisors (see below), whose sum is σ = 53454370176. Its totient is φ = 37277343936.

The previous prime is 45120006419. The next prime is 45120006427. The reversal of 45120006421 is 12460002154.

It is a happy number.

It is not a de Polignac number, because 45120006421 - 2¹ = 45120006419 is a prime.

It is a super-5 number, since 5×45120006421⁵ (a number of 54 digits) contains 55555 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45120006427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 786346 + ... + 841771.

It is an arithmetic number, because the mean of its divisors is an integer number (3340898136).

Almost surely, 2^45120006421 is an apocalyptic number.

It is an amenable number.

45120006421 is a deficient number, since it is larger than the sum of its proper divisors (8334363755).

45120006421 is a wasteful number, since it uses less digits than its factorization.

45120006421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628268.

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 45120006421 its reverse (12460002154), we get a palindrome (57580008575).

The spelling of 45120006421 in words is "forty-five billion, one hundred twenty million, six thousand, four hundred twenty-one".