1421515315 has 16 divisors (see below), whose sum is σ = 1863197280. Its totient is φ = 1032549120.

The previous prime is 1421515313. The next prime is 1421515351. The reversal of 1421515315 is 5135151241.

It is not a de Polignac number, because 1421515315 - 2¹ = 1421515313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1421515313) 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, 30007 + ... + 61183.

It is an arithmetic number, because the mean of its divisors is an integer number (116449830).

Almost surely, 2^1421515315 is an apocalyptic number.

1421515315 is a deficient number, since it is larger than the sum of its proper divisors (441681965).

1421515315 is a wasteful number, since it uses less digits than its factorization.

1421515315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32022.

The product of its digits is 3000, while the sum is 28.

The square root of 1421515315 is about 37702.9881441776. The cubic root of 1421515315 is about 1124.3905347397.

Adding to 1421515315 its reverse (5135151241), we get a palindrome (6556666556).

The spelling of 1421515315 in words is "one billion, four hundred twenty-one million, five hundred fifteen thousand, three hundred fifteen".