1142242040 has 32 divisors (see below), whose sum is σ = 2602584000. Its totient is φ = 451112064.

The previous prime is 1142242037. The next prime is 1142242093. The reversal of 1142242040 is 402422411.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177575 + ... + 183894.

It is an arithmetic number, because the mean of its divisors is an integer number (81330750).

Almost surely, 2^1142242040 is an apocalyptic number.

1142242040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142242040 is an abundant number, since it is smaller than the sum of its proper divisors (1460341960).

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

1142242040 is a wasteful number, since it uses less digits than its factorization.

1142242040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361559 (or 361555 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1142242040 is about 33797.0714707650. The cubic root of 1142242040 is about 1045.3283127051.

Adding to 1142242040 its reverse (402422411), we get a palindrome (1544664451).

The spelling of 1142242040 in words is "one billion, one hundred forty-two million, two hundred forty-two thousand, forty".