1523423142 has 96 divisors (see below), whose sum is σ = 3696585984. Its totient is φ = 451123200.

The previous prime is 1523423141. The next prime is 1523423171. The reversal of 1523423142 is 2413243251.

1523423142 is a `hidden beast` number, since 1 + 5 + 2 + 342 + 314 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1523423141) 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, 386968 + ... + 390884.

It is an arithmetic number, because the mean of its divisors is an integer number (38506104).

Almost surely, 2^1523423142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1523423142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1848292992).

1523423142 is an abundant number, since it is smaller than the sum of its proper divisors (2173162842).

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

1523423142 is a wasteful number, since it uses less digits than its factorization.

1523423142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4014 (or 4011 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 1523423142 is about 39031.0535599540. The cubic root of 1523423142 is about 1150.6418954588.

Adding to 1523423142 its reverse (2413243251), we get a palindrome (3936666393).

The spelling of 1523423142 in words is "one billion, five hundred twenty-three million, four hundred twenty-three thousand, one hundred forty-two".