155354402242 has 48 divisors (see below), whose sum is σ = 258908597640. Its totient is φ = 69840076800.

The previous prime is 155354402227. The next prime is 155354402249. The reversal of 155354402242 is 242204453551.

It can be written as a sum of positive squares in 12 ways, for example, as 26127812881 + 129226589361 = 161641^2 + 359481^2 .

It is not an unprimeable number, because it can be changed into a prime (155354402249) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8874234 + ... + 8891722.

Almost surely, 2^155354402242 is an apocalyptic number.

155354402242 is a deficient number, since it is larger than the sum of its proper divisors (103554195398).

155354402242 is a wasteful number, since it uses less digits than its factorization.

155354402242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18199 (or 18186 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 37.

Adding to 155354402242 its reverse (242204453551), we get a palindrome (397558855793).

The spelling of 155354402242 in words is "one hundred fifty-five billion, three hundred fifty-four million, four hundred two thousand, two hundred forty-two".