1521655342 has 16 divisors (see below), whose sum is σ = 2293785072. Its totient is φ = 757068480.

The previous prime is 1521655327. The next prime is 1521655349. The reversal of 1521655342 is 2435561251.

It is a junction number, because it is equal to n+sod(n) for n = 1521655298 and 1521655307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1521655349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531178 + ... + 534034.

It is an arithmetic number, because the mean of its divisors is an integer number (143361567).

Almost surely, 2^1521655342 is an apocalyptic number.

1521655342 is a deficient number, since it is larger than the sum of its proper divisors (772129730).

1521655342 is a wasteful number, since it uses less digits than its factorization.

1521655342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4083.

The product of its digits is 36000, while the sum is 34.

The square root of 1521655342 is about 39008.4009157002. The cubic root of 1521655342 is about 1150.1966499248.

The spelling of 1521655342 in words is "one billion, five hundred twenty-one million, six hundred fifty-five thousand, three hundred forty-two".