1142625140 has 24 divisors (see below), whose sum is σ = 2406066432. Its totient is φ = 455801760.

The previous prime is 1142625139. The next prime is 1142625149. The reversal of 1142625140 is 415262411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142625149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70496 + ... + 85175.

It is an arithmetic number, because the mean of its divisors is an integer number (100252768).

Almost surely, 2^1142625140 is an apocalyptic number.

1142625140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142625140 is an abundant number, since it is smaller than the sum of its proper divisors (1263441292).

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

1142625140 is a wasteful number, since it uses less digits than its factorization.

1142625140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156047 (or 156045 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1142625140 is about 33802.7386464470. The cubic root of 1142625140 is about 1045.4451649133.

Adding to 1142625140 its reverse (415262411), we get a palindrome (1557887551).

The spelling of 1142625140 in words is "one billion, one hundred forty-two million, six hundred twenty-five thousand, one hundred forty".