1045420340 has 12 divisors (see below), whose sum is σ = 2195382756. Its totient is φ = 418168128.

The previous prime is 1045420319. The next prime is 1045420367. The reversal of 1045420340 is 430245401.

It can be written as a sum of positive squares in 2 ways, for example, as 749992996 + 295427344 = 27386^2 + 17188^2 .

It is a congruent number.

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, 26135489 + ... + 26135528.

It is an arithmetic number, because the mean of its divisors is an integer number (182948563).

Almost surely, 2^1045420340 is an apocalyptic number.

1045420340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1045420340 is an abundant number, since it is smaller than the sum of its proper divisors (1149962416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1045420340 is a wasteful number, since it uses less digits than its factorization.

1045420340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52271026 (or 52271024 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1045420340 is about 32332.9605820438. The cubic root of 1045420340 is about 1014.9165048970.

Adding to 1045420340 its reverse (430245401), we get a palindrome (1475665741).

The spelling of 1045420340 in words is "one billion, forty-five million, four hundred twenty thousand, three hundred forty".