155230542 has 24 divisors (see below), whose sum is σ = 350956944. Its totient is φ = 49493664.

The previous prime is 155230541. The next prime is 155230549. The reversal of 155230542 is 245032551.

It is a happy number.

It is a super-2 number, since 2×155230542² = 48193042339227528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155230541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187063 + ... + 187890.

It is an arithmetic number, because the mean of its divisors is an integer number (14623206).

Almost surely, 2^155230542 is an apocalyptic number.

155230542 is an abundant number, since it is smaller than the sum of its proper divisors (195726402).

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

155230542 is a wasteful number, since it uses less digits than its factorization.

155230542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374984 (or 374981 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 155230542 is about 12459.1549472667. The cubic root of 155230542 is about 537.4347259476.

The spelling of 155230542 in words is "one hundred fifty-five million, two hundred thirty thousand, five hundred forty-two".