1421557268 has 12 divisors (see below), whose sum is σ = 2517698400. Its totient is φ = 702214872.

The previous prime is 1421557261. The next prime is 1421557283. The reversal of 1421557268 is 8627551241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421557261) 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, 2140568 + ... + 2141231.

It is an arithmetic number, because the mean of its divisors is an integer number (209808200).

Almost surely, 2^1421557268 is an apocalyptic number.

It is an amenable number.

1421557268 is a deficient number, since it is larger than the sum of its proper divisors (1096141132).

1421557268 is a wasteful number, since it uses less digits than its factorization.

1421557268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4281886 (or 4281884 counting only the distinct ones).

The product of its digits is 134400, while the sum is 41.

The square root of 1421557268 is about 37703.5445018104. The cubic root of 1421557268 is about 1124.4015959623.

The spelling of 1421557268 in words is "one billion, four hundred twenty-one million, five hundred fifty-seven thousand, two hundred sixty-eight".