155642104 has 16 divisors (see below), whose sum is σ = 304517520. Its totient is φ = 74437440.

The previous prime is 155642063. The next prime is 155642117. The reversal of 155642104 is 401246551.

155642104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 422757 + ... + 423124.

It is an arithmetic number, because the mean of its divisors is an integer number (19032345).

Almost surely, 2^155642104 is an apocalyptic number.

It is an amenable number.

155642104 is a deficient number, since it is larger than the sum of its proper divisors (148875416).

155642104 is a wasteful number, since it uses less digits than its factorization.

155642104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845910 (or 845906 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 155642104 is about 12475.6604634785. The cubic root of 155642104 is about 537.9092728533.

Adding to 155642104 its reverse (401246551), we get a palindrome (556888655).

It can be divided in two parts, 1556 and 42104, that added together give a triangular number (43660 = T₂₉₅).

The spelling of 155642104 in words is "one hundred fifty-five million, six hundred forty-two thousand, one hundred four".