1535123161542 has 8 divisors (see below), whose sum is σ = 3070246323096. Its totient is φ = 511707720512.

The previous prime is 1535123161519. The next prime is 1535123161543. The reversal of 1535123161542 is 2451613215351.

It is a sphenic number, since it is the product of 3 distinct primes.

1535123161542 is an admirable number.

It is a super-2 number, since 2×1535123161542² (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 1535123161542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1535123161543) 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 3 ways as a sum of consecutive naturals, for example, 127926930123 + ... + 127926930134.

It is an arithmetic number, because the mean of its divisors is an integer number (383780790387).

Almost surely, 2^{1535123161542} is an apocalyptic number.

1535123161542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1535123161542 is a wasteful number, since it uses less digits than its factorization.

1535123161542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255853860262.

The product of its digits is 108000, while the sum is 39.

Adding to 1535123161542 its reverse (2451613215351), we get a palindrome (3986736376893).

The spelling of 1535123161542 in words is "one trillion, five hundred thirty-five billion, one hundred twenty-three million, one hundred sixty-one thousand, five hundred forty-two".