1121426420 has 24 divisors (see below), whose sum is σ = 2493525384. Its totient is φ = 422183936.

The previous prime is 1121426413. The next prime is 1121426431. The reversal of 1121426420 is 246241211.

It can be written as a sum of positive squares in 4 ways, for example, as 44142736 + 1077283684 = 6644^2 + 32822^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1648817 + ... + 1649496.

It is an arithmetic number, because the mean of its divisors is an integer number (103896891).

Almost surely, 2^1121426420 is an apocalyptic number.

1121426420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121426420 is an abundant number, since it is smaller than the sum of its proper divisors (1372098964).

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

1121426420 is a wasteful number, since it uses less digits than its factorization.

1121426420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3298339 (or 3298337 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1121426420 is about 33487.7055051552. The cubic root of 1121426420 is about 1038.9395069955.

Adding to 1121426420 its reverse (246241211), we get a palindrome (1367667631).

The spelling of 1121426420 in words is "one billion, one hundred twenty-one million, four hundred twenty-six thousand, four hundred twenty".