1674270421 has 4 divisors (see below), whose sum is σ = 1676744172. Its totient is φ = 1671796672.

The previous prime is 1674270391. The next prime is 1674270457. The reversal of 1674270421 is 1240724761.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1240724761 = 2389 ⋅519349.

It can be written as a sum of positive squares in 2 ways, for example, as 1466507025 + 207763396 = 38295^2 + 14414^2 .

It is a cyclic number.

It is not a de Polignac number, because 1674270421 - 2⁷ = 1674270293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1674270121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1235860 + ... + 1237213.

It is an arithmetic number, because the mean of its divisors is an integer number (419186043).

Almost surely, 2^1674270421 is an apocalyptic number.

It is an amenable number.

1674270421 is a deficient number, since it is larger than the sum of its proper divisors (2473751).

1674270421 is an equidigital number, since it uses as much as digits as its factorization.

1674270421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2473750.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 1674270421 is about 40917.8496624639. The cubic root of 1674270421 is about 1187.4314159614.

The spelling of 1674270421 in words is "one billion, six hundred seventy-four million, two hundred seventy thousand, four hundred twenty-one".