1428151242 has 32 divisors (see below), whose sum is σ = 3265651584. Its totient is φ = 407880000.

The previous prime is 1428151223. The next prime is 1428151243. The reversal of 1428151242 is 2421518241.

It is a super-2 number, since 2×1428151242² = 4079231940052285128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1428151243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133492 + ... + 143792.

It is an arithmetic number, because the mean of its divisors is an integer number (102051612).

Almost surely, 2^1428151242 is an apocalyptic number.

1428151242 is an abundant number, since it is smaller than the sum of its proper divisors (1837500342).

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

1428151242 is a wasteful number, since it uses less digits than its factorization.

1428151242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13614.

The product of its digits is 5120, while the sum is 30.

The square root of 1428151242 is about 37790.8883462667. Note that the first 3 decimals coincide. The cubic root of 1428151242 is about 1126.1374482941.

Adding to 1428151242 its reverse (2421518241), we get a palindrome (3849669483).

It can be divided in two parts, 14 and 28151242, that added together give a triangular number (28151256 = T₇₅₀₃).

The spelling of 1428151242 in words is "one billion, four hundred twenty-eight million, one hundred fifty-one thousand, two hundred forty-two".