1042551403 has 4 divisors (see below), whose sum is σ = 1067979528. Its totient is φ = 1017123280.

The previous prime is 1042551373. The next prime is 1042551407. The reversal of 1042551403 is 3041552401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3041552401 = 4937 ⋅616073.

It is a cyclic number.

It is not a de Polignac number, because 1042551403 - 2¹³ = 1042543211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042551407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12714001 + ... + 12714082.

It is an arithmetic number, because the mean of its divisors is an integer number (266994882).

Almost surely, 2^1042551403 is an apocalyptic number.

1042551403 is a deficient number, since it is larger than the sum of its proper divisors (25428125).

1042551403 is an equidigital number, since it uses as much as digits as its factorization.

1042551403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25428124.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1042551403 is about 32288.5645856238. The cubic root of 1042551403 is about 1013.9872457862.

The spelling of 1042551403 in words is "one billion, forty-two million, five hundred fifty-one thousand, four hundred three".