155642341 has 8 divisors (see below), whose sum is σ = 156797784. Its totient is φ = 154490880.

The previous prime is 155642321. The next prime is 155642353. The reversal of 155642341 is 143246551.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 45832900 + 109809441 = 6770^2 + 10479^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155642341 - 2⁵ = 155642309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155642321) 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, 164931 + ... + 165871.

It is an arithmetic number, because the mean of its divisors is an integer number (19599723).

Almost surely, 2^155642341 is an apocalyptic number.

It is an amenable number.

155642341 is a deficient number, since it is larger than the sum of its proper divisors (1155443).

155642341 is an equidigital number, since it uses as much as digits as its factorization.

155642341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991.

The product of its digits is 14400, while the sum is 31.

The square root of 155642341 is about 12475.6699619700. The cubic root of 155642341 is about 537.9095458823.

Adding to 155642341 its reverse (143246551), we get a palindrome (298888892).

The spelling of 155642341 in words is "one hundred fifty-five million, six hundred forty-two thousand, three hundred forty-one".