1420121444 has 12 divisors (see below), whose sum is σ = 2840242944. Its totient is φ = 608623464.

The previous prime is 1420121431. The next prime is 1420121447. The reversal of 1420121444 is 4441210241.

1420121444 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1420121447) 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, 25359284 + ... + 25359339.

It is an arithmetic number, because the mean of its divisors is an integer number (236686912).

Almost surely, 2^1420121444 is an apocalyptic number.

1420121444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1420121444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1420121444 is a wasteful number, since it uses less digits than its factorization.

1420121444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50718634 (or 50718632 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 1420121444 is about 37684.4987229497. The cubic root of 1420121444 is about 1124.0229064113.

Adding to 1420121444 its reverse (4441210241), we get a palindrome (5861331685).

The spelling of 1420121444 in words is "one billion, four hundred twenty million, one hundred twenty-one thousand, four hundred forty-four".