155420246 has 8 divisors (see below), whose sum is σ = 243266544. Its totient is φ = 74331400.

The previous prime is 155420233. The next prime is 155420249. The reversal of 155420246 is 642024551.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155420249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1689305 + ... + 1689396.

It is an arithmetic number, because the mean of its divisors is an integer number (30408318).

Almost surely, 2^155420246 is an apocalyptic number.

155420246 is a deficient number, since it is larger than the sum of its proper divisors (87846298).

155420246 is a wasteful number, since it uses less digits than its factorization.

155420246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3378726.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 155420246 is about 12466.7656591435. The cubic root of 155420246 is about 537.6535660727.

Adding to 155420246 its reverse (642024551), we get a palindrome (797444797).

The spelling of 155420246 in words is "one hundred fifty-five million, four hundred twenty thousand, two hundred forty-six".