1142544402 has 12 divisors (see below), whose sum is σ = 2475512910. Its totient is φ = 380848128.

The previous prime is 1142544383. The next prime is 1142544437. The reversal of 1142544402 is 2044452411.

1142544402 is a `hidden beast` number, since 1 + 1 + 4 + 254 + 4 + 402 = 666.

It can be written as a sum of positive squares in only one way, i.e., 577008441 + 565535961 = 24021^2 + 23781^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31737327 + ... + 31737362.

Almost surely, 2^1142544402 is an apocalyptic number.

1142544402 is an abundant number, since it is smaller than the sum of its proper divisors (1332968508).

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

1142544402 is a wasteful number, since it uses less digits than its factorization.

1142544402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63474697 (or 63474694 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 1142544402 is about 33801.5443730017. The cubic root of 1142544402 is about 1045.4205405820.

Adding to 1142544402 its reverse (2044452411), we get a palindrome (3186996813).

The spelling of 1142544402 in words is "one billion, one hundred forty-two million, five hundred forty-four thousand, four hundred two".