1142353240 has 64 divisors (see below), whose sum is σ = 2943682560. Its totient is φ = 390837120.

The previous prime is 1142353231. The next prime is 1142353241. The reversal of 1142353240 is 423532411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142353241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136785 + ... + 144895.

It is an arithmetic number, because the mean of its divisors is an integer number (45995040).

Almost surely, 2^1142353240 is an apocalyptic number.

1142353240 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 1142353240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1471841280).

1142353240 is an abundant number, since it is smaller than the sum of its proper divisors (1801329320).

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

1142353240 is a wasteful number, since it uses less digits than its factorization.

1142353240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8632 (or 8628 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1142353240 is about 33798.7165436796. The cubic root of 1142353240 is about 1045.3622333432.

Adding to 1142353240 its reverse (423532411), we get a palindrome (1565885651).

It can be divided in two parts, 1 and 142353240, that added together give a palindrome (142353241).

The spelling of 1142353240 in words is "one billion, one hundred forty-two million, three hundred fifty-three thousand, two hundred forty".