155881342 has 4 divisors (see below), whose sum is σ = 233822016. Its totient is φ = 77940670.

The previous prime is 155881337. The next prime is 155881343. The reversal of 155881342 is 243188551.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155881343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38970334 + ... + 38970337.

It is an arithmetic number, because the mean of its divisors is an integer number (58455504).

Almost surely, 2^155881342 is an apocalyptic number.

155881342 is a deficient number, since it is larger than the sum of its proper divisors (77940674).

155881342 is an equidigital number, since it uses as much as digits as its factorization.

155881342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77940673.

The product of its digits is 38400, while the sum is 37.

The square root of 155881342 is about 12485.2449715654. The cubic root of 155881342 is about 538.1847391438.

The spelling of 155881342 in words is "one hundred fifty-five million, eight hundred eighty-one thousand, three hundred forty-two".