1142440690 has 8 divisors (see below), whose sum is σ = 2056393260. Its totient is φ = 456976272.

The previous prime is 1142440667. The next prime is 1142440693. The reversal of 1142440690 is 960442411.

1142440690 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1135892209 + 6548481 = 33703^2 + 2559^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1142440690² = 2610341460335352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1142440693) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 57122025 + ... + 57122044.

Almost surely, 2^1142440690 is an apocalyptic number.

1142440690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1142440690 is a deficient number, since it is larger than the sum of its proper divisors (913952570).

1142440690 is a wasteful number, since it uses less digits than its factorization.

1142440690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114244076.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1142440690 is about 33800.0102070991. The cubic root of 1142440690 is about 1045.3889076944.

The spelling of 1142440690 in words is "one billion, one hundred forty-two million, four hundred forty thousand, six hundred ninety".