172142516 has 48 divisors (see below), whose sum is σ = 377806464. Its totient is φ = 66807936.

The previous prime is 172142461. The next prime is 172142519. The reversal of 172142516 is 615241271.

172142516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172142519) 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, 14831 + ... + 23753.

It is an arithmetic number, because the mean of its divisors is an integer number (7870968).

Almost surely, 2^172142516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172142516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188903232).

172142516 is an abundant number, since it is smaller than the sum of its proper divisors (205663948).

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

172142516 is a wasteful number, since it uses less digits than its factorization.

172142516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9000 (or 8998 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 172142516 is about 13120.3092951348. The cubic root of 172142516 is about 556.2833338438.

Adding to 172142516 its reverse (615241271), we get a palindrome (787383787).

The spelling of 172142516 in words is "one hundred seventy-two million, one hundred forty-two thousand, five hundred sixteen".