155342142 has 12 divisors (see below), whose sum is σ = 336574680. Its totient is φ = 51780708.

The previous prime is 155342137. The next prime is 155342149. The reversal of 155342142 is 241243551.

It is a super-2 number, since 2×155342142² = 48262362162296328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155342149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4315042 + ... + 4315077.

It is an arithmetic number, because the mean of its divisors is an integer number (28047890).

Almost surely, 2^155342142 is an apocalyptic number.

155342142 is an abundant number, since it is smaller than the sum of its proper divisors (181232538).

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

155342142 is a wasteful number, since it uses less digits than its factorization.

155342142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8630127 (or 8630124 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 155342142 is about 12463.6327770037. The cubic root of 155342142 is about 537.5634878676.

Adding to 155342142 its reverse (241243551), we get a palindrome (396585693).

The spelling of 155342142 in words is "one hundred fifty-five million, three hundred forty-two thousand, one hundred forty-two".