1555471042 has 4 divisors (see below), whose sum is σ = 2333206566. Its totient is φ = 777735520.

The previous prime is 1555471019. The next prime is 1555471061. The reversal of 1555471042 is 2401745551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1528731801 + 26739241 = 39099^2 + 5171^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1555470989 and 1555471007.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388867759 + ... + 388867762.

Almost surely, 2^1555471042 is an apocalyptic number.

1555471042 is a deficient number, since it is larger than the sum of its proper divisors (777735524).

1555471042 is an equidigital number, since it uses as much as digits as its factorization.

1555471042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777735523.

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 1555471042 is about 39439.4604679121. The cubic root of 1555471042 is about 1158.6545642461.

The spelling of 1555471042 in words is "one billion, five hundred fifty-five million, four hundred seventy-one thousand, forty-two".