1142362440 has 192 divisors, whose sum is σ = 3875376960. Its totient is φ = 302641920.

The previous prime is 1142362421. The next prime is 1142362451. The reversal of 1142362440 is 442632411.

It is a happy number.

1142362440 is a `hidden beast` number, since 1 + 14 + 23 + 624 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2050642 + ... + 2051198.

It is an arithmetic number, because the mean of its divisors is an integer number (20184255).

Almost surely, 2^1142362440 is an apocalyptic number.

1142362440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1142362440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1937688480).

1142362440 is an abundant number, since it is smaller than the sum of its proper divisors (2733014520).

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

1142362440 is a wasteful number, since it uses less digits than its factorization.

1142362440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 1142362440 is about 33798.8526432481. The cubic root of 1142362440 is about 1045.3650396283.

Adding to 1142362440 its reverse (442632411), we get a palindrome (1584994851).

The spelling of 1142362440 in words is "one billion, one hundred forty-two million, three hundred sixty-two thousand, four hundred forty".