1142517420 has 96 divisors (see below), whose sum is σ = 3877655040. Its totient is φ = 276972480.

The previous prime is 1142517377. The next prime is 1142517421. The reversal of 1142517420 is 247152411.

1142517420 is a `hidden beast` number, since 1 + 142 + 517 + 4 + 2 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1142517421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90232 + ... + 102111.

It is an arithmetic number, because the mean of its divisors is an integer number (40392240).

Almost surely, 2^1142517420 is an apocalyptic number.

1142517420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142517420 is an abundant number, since it is smaller than the sum of its proper divisors (2735137620).

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

1142517420 is a wasteful number, since it uses less digits than its factorization.

1142517420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192372 (or 192364 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 1142517420 is about 33801.1452468700. The cubic root of 1142517420 is about 1045.4123110669.

Adding to 1142517420 its reverse (247152411), we get a palindrome (1389669831).

The spelling of 1142517420 in words is "one billion, one hundred forty-two million, five hundred seventeen thousand, four hundred twenty".