1142352420 has 96 divisors (see below), whose sum is σ = 3524121216. Its totient is φ = 274176000.

The previous prime is 1142352377. The next prime is 1142352433. The reversal of 1142352420 is 242532411.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58092 + ... + 75228.

It is an arithmetic number, because the mean of its divisors is an integer number (36709596).

Almost surely, 2^1142352420 is an apocalyptic number.

1142352420 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 1142352420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1762060608).

1142352420 is an abundant number, since it is smaller than the sum of its proper divisors (2381768796).

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

1142352420 is a wasteful number, since it uses less digits than its factorization.

1142352420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17261 (or 17259 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1142352420 is about 33798.7044130393. The cubic root of 1142352420 is about 1045.3619832170.

Adding to 1142352420 its reverse (242532411), we get a palindrome (1384884831).

Subtracting from 1142352420 its reverse (242532411), we obtain a square (899820009 = 29997²).

The spelling of 1142352420 in words is "one billion, one hundred forty-two million, three hundred fifty-two thousand, four hundred twenty".