155242130 has 24 divisors (see below), whose sum is σ = 296845668. Its totient is φ = 58443008.

The previous prime is 155242117. The next prime is 155242177. The reversal of 155242130 is 31242551.

It can be written as a sum of positive squares in 6 ways, for example, as 111112681 + 44129449 = 10541^2 + 6643^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 155242096 and 155242105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23969 + ... + 29748.

Almost surely, 2^155242130 is an apocalyptic number.

155242130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155242130 is a deficient number, since it is larger than the sum of its proper divisors (141603538).

155242130 is a wasteful number, since it uses less digits than its factorization.

155242130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53758 (or 53741 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 155242130 is about 12459.6199781534. The cubic root of 155242130 is about 537.4480988285.

Adding to 155242130 its reverse (31242551), we get a palindrome (186484681).

The spelling of 155242130 in words is "one hundred fifty-five million, two hundred forty-two thousand, one hundred thirty".