1428724122 has 16 divisors (see below), whose sum is σ = 3265655232. Its totient is φ = 408206880.

The previous prime is 1428724111. The next prime is 1428724123. The reversal of 1428724122 is 2214278241.

It is not an unprimeable number, because it can be changed into a prime (1428724123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17008579 + ... + 17008662.

It is an arithmetic number, because the mean of its divisors is an integer number (204103452).

Almost surely, 2^1428724122 is an apocalyptic number.

1428724122 is an abundant number, since it is smaller than the sum of its proper divisors (1836931110).

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

1428724122 is a wasteful number, since it uses less digits than its factorization.

1428724122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34017253.

The product of its digits is 14336, while the sum is 33.

The square root of 1428724122 is about 37798.4671911441. The cubic root of 1428724122 is about 1126.2880054991.

The spelling of 1428724122 in words is "one billion, four hundred twenty-eight million, seven hundred twenty-four thousand, one hundred twenty-two".