1555142006 has 16 divisors (see below), whose sum is σ = 2592794448. Its totient is φ = 693544800.

The previous prime is 1555141967. The next prime is 1555142021. The reversal of 1555142006 is 6002415551.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1555142006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665705 + ... + 668036.

It is an arithmetic number, because the mean of its divisors is an integer number (162049653).

Almost surely, 2^1555142006 is an apocalyptic number.

1555142006 is a deficient number, since it is larger than the sum of its proper divisors (1037652442).

1555142006 is a wasteful number, since it uses less digits than its factorization.

1555142006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333807.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 1555142006 is about 39435.2888413411. The cubic root of 1555142006 is about 1158.5728599611.

Adding to 1555142006 its reverse (6002415551), we get a palindrome (7557557557).

The spelling of 1555142006 in words is "one billion, five hundred fifty-five million, one hundred forty-two thousand, six".