155042404 has 12 divisors (see below), whose sum is σ = 295990128. Its totient is φ = 70473800.

The previous prime is 155042401. The next prime is 155042411. The reversal of 155042404 is 404240551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (155042401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1761802 + ... + 1761889.

It is an arithmetic number, because the mean of its divisors is an integer number (24665844).

Almost surely, 2^155042404 is an apocalyptic number.

It is an amenable number.

155042404 is a deficient number, since it is larger than the sum of its proper divisors (140947724).

155042404 is a wasteful number, since it uses less digits than its factorization.

155042404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3523706 (or 3523704 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 155042404 is about 12451.6024671526. The cubic root of 155042404 is about 537.2175161778.

Adding to 155042404 its reverse (404240551), we get a palindrome (559282955).

The spelling of 155042404 in words is "one hundred fifty-five million, forty-two thousand, four hundred four".