1142625540 has 96 divisors (see below), whose sum is σ = 3672023040. Its totient is φ = 260055936.

The previous prime is 1142625511. The next prime is 1142625551. The reversal of 1142625540 is 455262411.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1142625498 and 1142625507.

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, 94689 + ... + 106071.

It is an arithmetic number, because the mean of its divisors is an integer number (38250240).

Almost surely, 2^1142625540 is an apocalyptic number.

1142625540 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 1142625540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1836011520).

1142625540 is an abundant number, since it is smaller than the sum of its proper divisors (2529397500).

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

1142625540 is a wasteful number, since it uses less digits than its factorization.

1142625540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11641 (or 11639 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 1142625540 is about 33802.7445631268. The cubic root of 1142625540 is about 1045.4452869066.

Adding to 1142625540 its reverse (455262411), we get a palindrome (1597887951).

The spelling of 1142625540 in words is "one billion, one hundred forty-two million, six hundred twenty-five thousand, five hundred forty".