1142402225 has 6 divisors (see below), whose sum is σ = 1416578790. Its totient is φ = 913921760.

The previous prime is 1142402167. The next prime is 1142402263. The reversal of 1142402225 is 5222042411.

It can be written as a sum of positive squares in 3 ways, for example, as 5094049 + 1137308176 = 2257^2 + 33724^2 .

It is not a de Polignac number, because 1142402225 - 2⁶ = 1142402161 is a prime.

It is a super-3 number, since 3×1142402225³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1142402225.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22848020 + ... + 22848069.

It is an arithmetic number, because the mean of its divisors is an integer number (236096465).

Almost surely, 2^1142402225 is an apocalyptic number.

It is an amenable number.

1142402225 is a deficient number, since it is larger than the sum of its proper divisors (274176565).

1142402225 is an equidigital number, since it uses as much as digits as its factorization.

1142402225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45696099 (or 45696094 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1142402225 is about 33799.4411936056. The cubic root of 1142402225 is about 1045.3771751129.

Adding to 1142402225 its reverse (5222042411), we get a palindrome (6364444636).

The spelling of 1142402225 in words is "one billion, one hundred forty-two million, four hundred two thousand, two hundred twenty-five".