421838274 has 32 divisors (see below), whose sum is σ = 991174464. Its totient is φ = 117996480.

The previous prime is 421838269. The next prime is 421838279. The reversal of 421838274 is 472838124.

It is an interprime number because it is at equal distance from previous prime (421838269) and next prime (421838279).

It is a super-2 number, since 2×421838274² = 355895058822598152, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (421838279) 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, 244969 + ... + 246684.

It is an arithmetic number, because the mean of its divisors is an integer number (30974202).

Almost surely, 2^421838274 is an apocalyptic number.

421838274 is an abundant number, since it is smaller than the sum of its proper divisors (569336190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421838274 is a wasteful number, since it uses less digits than its factorization.

421838274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491682.

The product of its digits is 86016, while the sum is 39.

The square root of 421838274 is about 20538.7018577124. The cubic root of 421838274 is about 749.9782358129.

The spelling of 421838274 in words is "four hundred twenty-one million, eight hundred thirty-eight thousand, two hundred seventy-four".