263198142 has 48 divisors (see below), whose sum is σ = 598094640. Its totient is φ = 83534976.

The previous prime is 263198137. The next prime is 263198189. The reversal of 263198142 is 241891362.

263198142 is a `hidden beast` number, since 2 + 631 + 9 + 8 + 14 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 263198097 and 263198106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34653 + ... + 41559.

It is an arithmetic number, because the mean of its divisors is an integer number (12460305).

Almost surely, 2^263198142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 263198142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299047320).

263198142 is an abundant number, since it is smaller than the sum of its proper divisors (334896498).

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

263198142 is a wasteful number, since it uses less digits than its factorization.

263198142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7017 (or 7014 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 263198142 is about 16223.3825696123. The cubic root of 263198142 is about 640.8567156289.

The spelling of 263198142 in words is "two hundred sixty-three million, one hundred ninety-eight thousand, one hundred forty-two".