155243402 has 8 divisors (see below), whose sum is σ = 234407712. Its totient is φ = 77107500.

The previous prime is 155243393. The next prime is 155243419. The reversal of 155243402 is 204342551.

It is a happy number.

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

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 3 ways as a sum of consecutive naturals, for example, 256724 + ... + 257327.

It is an arithmetic number, because the mean of its divisors is an integer number (29300964).

Almost surely, 2^155243402 is an apocalyptic number.

155243402 is a deficient number, since it is larger than the sum of its proper divisors (79164310).

155243402 is a wasteful number, since it uses less digits than its factorization.

155243402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514204.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 155243402 is about 12459.6710229444. The cubic root of 155243402 is about 537.4495667120.

Adding to 155243402 its reverse (204342551), we get a palindrome (359585953).

The spelling of 155243402 in words is "one hundred fifty-five million, two hundred forty-three thousand, four hundred two".