421041387 has 16 divisors (see below), whose sum is σ = 636392960. Its totient is φ = 245464992.

The previous prime is 421041377. The next prime is 421041419. The reversal of 421041387 is 783140124.

It is not a de Polignac number, because 421041387 - 2²² = 416847083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421041307) 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, 283363 + ... + 284844.

It is an arithmetic number, because the mean of its divisors is an integer number (39774560).

Almost surely, 2^421041387 is an apocalyptic number.

421041387 is a deficient number, since it is larger than the sum of its proper divisors (215351573).

421041387 is a wasteful number, since it uses less digits than its factorization.

421041387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568242.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 421041387 is about 20519.2930433775. The cubic root of 421041387 is about 749.5056813815.

The spelling of 421041387 in words is "four hundred twenty-one million, forty-one thousand, three hundred eighty-seven".