1545323215242 has 32 divisors (see below), whose sum is σ = 3112213607424. Its totient is φ = 511522560000.

The previous prime is 1545323215229. The next prime is 1545323215259. The reversal of 1545323215242 is 2425123235451.

It is a super-2 number, since 2×1545323215242² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1545323215242.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 507259 + ... + 1829742.

It is an arithmetic number, because the mean of its divisors is an integer number (97256675232).

Almost surely, 2^{1545323215242} is an apocalyptic number.

1545323215242 is an abundant number, since it is smaller than the sum of its proper divisors (1566890392182).

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

1545323215242 is a wasteful number, since it uses less digits than its factorization.

1545323215242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337774.

The product of its digits is 288000, while the sum is 39.

The spelling of 1545323215242 in words is "one trillion, five hundred forty-five billion, three hundred twenty-three million, two hundred fifteen thousand, two hundred forty-two".