1421829837 has 12 divisors (see below), whose sum is σ = 2066837500. Its totient is φ = 941848128.

The previous prime is 1421829797. The next prime is 1421829889. The reversal of 1421829837 is 7389281241.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 472019076 + 949810761 = 21726^2 + 30819^2 .

It is not a de Polignac number, because 1421829837 - 2²² = 1417635533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1421829792 and 1421829801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421829637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 501712 + ... + 504537.

Almost surely, 2^1421829837 is an apocalyptic number.

It is an amenable number.

1421829837 is a deficient number, since it is larger than the sum of its proper divisors (645007663).

1421829837 is a wasteful number, since it uses less digits than its factorization.

1421829837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006412 (or 1006409 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 1421829837 is about 37707.1589621918. The cubic root of 1421829837 is about 1124.4734555207.

The spelling of 1421829837 in words is "one billion, four hundred twenty-one million, eight hundred twenty-nine thousand, eight hundred thirty-seven".