155140332042 has 16 divisors (see below), whose sum is σ = 310359323232. Its totient is φ = 51700334160.

The previous prime is 155140332023. The next prime is 155140332049. The reversal of 155140332042 is 240233041551.

It is a super-2 number, since 2×155140332042² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (155140332049) 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, 3251809 + ... + 3299172.

It is an arithmetic number, because the mean of its divisors is an integer number (19397457702).

Almost surely, 2^155140332042 is an apocalyptic number.

155140332042 is an abundant number, since it is smaller than the sum of its proper divisors (155218991190).

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

155140332042 is a wasteful number, since it uses less digits than its factorization.

155140332042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6554933.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 155140332042 its reverse (240233041551), we get a palindrome (395373373593).

The spelling of 155140332042 in words is "one hundred fifty-five billion, one hundred forty million, three hundred thirty-two thousand, forty-two".