421386755 has 8 divisors (see below), whose sum is σ = 506529072. Its totient is φ = 336532768.

The previous prime is 421386739. The next prime is 421386809. The reversal of 421386755 is 557683124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 421386755 - 2⁴ = 421386739 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68852 + ... + 74721.

It is an arithmetic number, because the mean of its divisors is an integer number (63316134).

Almost surely, 2^421386755 is an apocalyptic number.

421386755 is a deficient number, since it is larger than the sum of its proper divisors (85142317).

421386755 is a wasteful number, since it uses less digits than its factorization.

421386755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144165.

The product of its digits is 201600, while the sum is 41.

The square root of 421386755 is about 20527.7070078467. The cubic root of 421386755 is about 749.7105579417.

The spelling of 421386755 in words is "four hundred twenty-one million, three hundred eighty-six thousand, seven hundred fifty-five".