1421400412 has 48 divisors (see below), whose sum is σ = 2670071040. Its totient is φ = 660137472.

The previous prime is 1421400401. The next prime is 1421400419. The reversal of 1421400412 is 2140041241.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 1421400412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421400419) 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, 836748 + ... + 838444.

It is an arithmetic number, because the mean of its divisors is an integer number (55626480).

Almost surely, 2^1421400412 is an apocalyptic number.

It is an amenable number.

1421400412 is a deficient number, since it is larger than the sum of its proper divisors (1248670628).

1421400412 is a wasteful number, since it uses less digits than its factorization.

1421400412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930 (or 1928 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1421400412 is about 37701.4643216945. The cubic root of 1421400412 is about 1124.3602385889.

Adding to 1421400412 its reverse (2140041241), we get a palindrome (3561441653).

The spelling of 1421400412 in words is "one billion, four hundred twenty-one million, four hundred thousand, four hundred twelve".