421671754 has 12 divisors (see below), whose sum is σ = 735774354. Its totient is φ = 180716424.

The previous prime is 421671751. The next prime is 421671773. The reversal of 421671754 is 457176124.

It can be written as a sum of positive squares in only one way, i.e., 361190025 + 60481729 = 19005^2 + 7777^2 .

It is not an unprimeable number, because it can be changed into a prime (421671751) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2151289 + ... + 2151484.

Almost surely, 2^421671754 is an apocalyptic number.

421671754 is a deficient number, since it is larger than the sum of its proper divisors (314102600).

421671754 is a wasteful number, since it uses less digits than its factorization.

421671754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4302789 (or 4302782 counting only the distinct ones).

The product of its digits is 47040, while the sum is 37.

The square root of 421671754 is about 20534.6476473301. The cubic root of 421671754 is about 749.8795385790.

The spelling of 421671754 in words is "four hundred twenty-one million, six hundred seventy-one thousand, seven hundred fifty-four".