1252142112 has 96 divisors (see below), whose sum is σ = 3622183488. Its totient is φ = 376298496.

The previous prime is 1252142107. The next prime is 1252142113. The reversal of 1252142112 is 2112412521.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (1252142113) 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, 41998 + ... + 65330.

It is an arithmetic number, because the mean of its divisors is an integer number (37731078).

Almost surely, 2^1252142112 is an apocalyptic number.

1252142112 is a gapful number since it is divisible by the number (12) 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 1252142112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1811091744).

1252142112 is an abundant number, since it is smaller than the sum of its proper divisors (2370041376).

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

1252142112 is a wasteful number, since it uses less digits than its factorization.

1252142112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23402 (or 23394 counting only the distinct ones).

The product of its digits is 320, while the sum is 21.

The square root of 1252142112 is about 35385.6201302167. The cubic root of 1252142112 is about 1077.8323325707.

Adding to 1252142112 its reverse (2112412521), we get a palindrome (3364554633).

The spelling of 1252142112 in words is "one billion, two hundred fifty-two million, one hundred forty-two thousand, one hundred twelve".