1421402444 has 48 divisors (see below), whose sum is σ = 3140551680. Its totient is φ = 546773760.

The previous prime is 1421402431. The next prime is 1421402447. The reversal of 1421402444 is 4442041241.

It is not an unprimeable number, because it can be changed into a prime (1421402447) 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, 4877 + ... + 53540.

It is an arithmetic number, because the mean of its divisors is an integer number (65428160).

Almost surely, 2^1421402444 is an apocalyptic number.

1421402444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1421402444 is an abundant number, since it is smaller than the sum of its proper divisors (1719149236).

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

1421402444 is a wasteful number, since it uses less digits than its factorization.

1421402444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58518 (or 58516 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

The square root of 1421402444 is about 37701.4912702402. The cubic root of 1421402444 is about 1124.3607743748.

Adding to 1421402444 its reverse (4442041241), we get a palindrome (5863443685).

The spelling of 1421402444 in words is "one billion, four hundred twenty-one million, four hundred two thousand, four hundred forty-four".