421536715 has 16 divisors (see below), whose sum is σ = 509895936. Its totient is φ = 334540800.

The previous prime is 421536691. The next prime is 421536733. The reversal of 421536715 is 517635124.

It is not a de Polignac number, because 421536715 - 2²¹ = 419439563 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 424870 + ... + 425860.

It is an arithmetic number, because the mean of its divisors is an integer number (31868496).

Almost surely, 2^421536715 is an apocalyptic number.

421536715 is a deficient number, since it is larger than the sum of its proper divisors (88359221).

421536715 is a wasteful number, since it uses less digits than its factorization.

421536715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590.

The product of its digits is 25200, while the sum is 34.

The square root of 421536715 is about 20531.3593071672. The cubic root of 421536715 is about 749.7994812092.

The spelling of 421536715 in words is "four hundred twenty-one million, five hundred thirty-six thousand, seven hundred fifteen".