1421500015 has 16 divisors (see below), whose sum is σ = 1871680608. Its totient is φ = 1029914496.

The previous prime is 1421500001. The next prime is 1421500099. The reversal of 1421500015 is 5100051241.

It is not a de Polignac number, because 1421500015 - 2¹¹ = 1421497967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1421499965 and 1421500001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202869 + ... + 209758.

It is an arithmetic number, because the mean of its divisors is an integer number (116980038).

Almost surely, 2^1421500015 is an apocalyptic number.

1421500015 is a deficient number, since it is larger than the sum of its proper divisors (450180593).

1421500015 is a wasteful number, since it uses less digits than its factorization.

1421500015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412698.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 1421500015 is about 37702.7852419420. The cubic root of 1421500015 is about 1124.3865007259.

Adding to 1421500015 its reverse (5100051241), we get a palindrome (6521551256).

The spelling of 1421500015 in words is "one billion, four hundred twenty-one million, five hundred thousand, fifteen".