1418226421 has 4 divisors (see below), whose sum is σ = 1418369292. Its totient is φ = 1418083552.

The previous prime is 1418226401. The next prime is 1418226431. The reversal of 1418226421 is 1246228141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1246228141 = 223 ⋅5588467.

It can be written as a sum of positive squares in 2 ways, for example, as 131928196 + 1286298225 = 11486^2 + 35865^2 .

It is a cyclic number.

It is not a de Polignac number, because 1418226421 - 2⁹ = 1418225909 is a prime.

It is a super-2 number, since 2×1418226421² = 4022732362444938482, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1418226401) 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, 55336 + ... + 76801.

It is an arithmetic number, because the mean of its divisors is an integer number (354592323).

Almost surely, 2^1418226421 is an apocalyptic number.

It is an amenable number.

1418226421 is a deficient number, since it is larger than the sum of its proper divisors (142871).

1418226421 is a wasteful number, since it uses less digits than its factorization.

1418226421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142870.

The product of its digits is 6144, while the sum is 31.

The square root of 1418226421 is about 37659.3470601921. The cubic root of 1418226421 is about 1123.5227150545.

The spelling of 1418226421 in words is "one billion, four hundred eighteen million, two hundred twenty-six thousand, four hundred twenty-one".