1245575142 has 96 divisors (see below), whose sum is σ = 3288190464. Its totient is φ = 332640000.

The previous prime is 1245575131. The next prime is 1245575147. The reversal of 1245575142 is 2415755421.

1245575142 is a `hidden beast` number, since 1 + 2 + 45 + 575 + 1 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1245575097 and 1245575106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245575147) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 321517 + ... + 325367.

It is an arithmetic number, because the mean of its divisors is an integer number (34251984).

Almost surely, 2^1245575142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1245575142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1644095232).

1245575142 is an abundant number, since it is smaller than the sum of its proper divisors (2042615322).

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

1245575142 is a wasteful number, since it uses less digits than its factorization.

1245575142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4034 (or 4031 counting only the distinct ones).

The product of its digits is 56000, while the sum is 36.

The square root of 1245575142 is about 35292.7066403244. The cubic root of 1245575142 is about 1075.9447665618.

The spelling of 1245575142 in words is "one billion, two hundred forty-five million, five hundred seventy-five thousand, one hundred forty-two".