1145023402 has 4 divisors (see below), whose sum is σ = 1717535106. Its totient is φ = 572511700.

The previous prime is 1145023381. The next prime is 1145023403. The reversal of 1145023402 is 2043205411.

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., 872079961 + 272943441 = 29531^2 + 16521^2 .

It is a super-2 number, since 2×1145023402² = 2622157182255307208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1145023403) 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 as a sum of consecutive naturals, namely, 286255849 + ... + 286255852.

Almost surely, 2^1145023402 is an apocalyptic number.

1145023402 is a deficient number, since it is larger than the sum of its proper divisors (572511704).

1145023402 is an equidigital number, since it uses as much as digits as its factorization.

1145023402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572511703.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1145023402 is about 33838.1944258260. The cubic root of 1145023402 is about 1046.1760839189.

Adding to 1145023402 its reverse (2043205411), we get a palindrome (3188228813).

The spelling of 1145023402 in words is "one billion, one hundred forty-five million, twenty-three thousand, four hundred two".