1042145551 has 4 divisors (see below), whose sum is σ = 1051368192. Its totient is φ = 1032922912.

The previous prime is 1042145513. The next prime is 1042145557. The reversal of 1042145551 is 1555412401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1555412401 = 37 ⋅42038173.

It is a cyclic number.

It is not a de Polignac number, because 1042145551 - 2²³ = 1033756943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042145557) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4611151 + ... + 4611376.

It is an arithmetic number, because the mean of its divisors is an integer number (262842048).

Almost surely, 2^1042145551 is an apocalyptic number.

1042145551 is a deficient number, since it is larger than the sum of its proper divisors (9222641).

1042145551 is an equidigital number, since it uses as much as digits as its factorization.

1042145551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9222640.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 1042145551 is about 32282.2792101177. The cubic root of 1042145551 is about 1013.8556512631.

Adding to 1042145551 its reverse (1555412401), we get a palindrome (2597557952).

The spelling of 1042145551 in words is "one billion, forty-two million, one hundred forty-five thousand, five hundred fifty-one".