2015421502 has 48 divisors (see below), whose sum is σ = 3316016880. Its totient is φ = 915461120.

The previous prime is 2015421479. The next prime is 2015421503. The reversal of 2015421502 is 2051245102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015421503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10230468 + ... + 10230664.

It is an arithmetic number, because the mean of its divisors is an integer number (69083685).

Almost surely, 2^2015421502 is an apocalyptic number.

2015421502 is a deficient number, since it is larger than the sum of its proper divisors (1300595378).

2015421502 is a wasteful number, since it uses less digits than its factorization.

2015421502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477 (or 436 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 2015421502 is about 44893.4460918295. The cubic root of 2015421502 is about 1263.1510745921.

Adding to 2015421502 its reverse (2051245102), we get a palindrome (4066666604).

The spelling of 2015421502 in words is "two billion, fifteen million, four hundred twenty-one thousand, five hundred two".