2015420045 has 4 divisors (see below), whose sum is σ = 2418504060. Its totient is φ = 1612336032.

The previous prime is 2015420009. The next prime is 2015420093. The reversal of 2015420045 is 5400245102.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 260564164 + 1754855881 = 16142^2 + 41891^2 .

It is a cyclic number.

It is not a de Polignac number, because 2015420045 - 2⁸ = 2015419789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2015420045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201542000 + ... + 201542009.

It is an arithmetic number, because the mean of its divisors is an integer number (604626015).

Almost surely, 2^2015420045 is an apocalyptic number.

It is an amenable number.

2015420045 is a deficient number, since it is larger than the sum of its proper divisors (403084015).

2015420045 is an equidigital number, since it uses as much as digits as its factorization.

2015420045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403084014.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 2015420045 is about 44893.4298645136. The cubic root of 2015420045 is about 1263.1507702039.

Adding to 2015420045 its reverse (5400245102), we get a palindrome (7415665147).

The spelling of 2015420045 in words is "two billion, fifteen million, four hundred twenty thousand, forty-five".