2145511042 has 8 divisors (see below), whose sum is σ = 3218705532. Its totient is φ = 1072609200.

The previous prime is 2145511033. The next prime is 2145511117. The reversal of 2145511042 is 2401155412.

It can be written as a sum of positive squares in 2 ways, for example, as 2112229681 + 33281361 = 45959^2 + 5769^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 2145510998 and 2145511016.

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, 53809 + ... + 84772.

Almost surely, 2^2145511042 is an apocalyptic number.

2145511042 is a deficient number, since it is larger than the sum of its proper divisors (1073194490).

2145511042 is a wasteful number, since it uses less digits than its factorization.

2145511042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146324.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 2145511042 is about 46319.6615056716. The cubic root of 2145511042 is about 1289.7640018575.

Adding to 2145511042 its reverse (2401155412), we get a palindrome (4546666454).

The spelling of 2145511042 in words is "two billion, one hundred forty-five million, five hundred eleven thousand, forty-two".