248749542 has 80 divisors (see below), whose sum is σ = 604839312. Its totient is φ = 76101120.

The previous prime is 248749537. The next prime is 248749603. The reversal of 248749542 is 245947842.

248749542 is a `hidden beast` number, since 24 + 87 + 4 + 9 + 542 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 111813 + ... + 114015.

Almost surely, 2^248749542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 248749542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302419656).

248749542 is an abundant number, since it is smaller than the sum of its proper divisors (356089770).

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

248749542 is a wasteful number, since it uses less digits than its factorization.

248749542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2275 (or 2266 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 248749542 is about 15771.7957760047. The cubic root of 248749542 is about 628.9084499880.

The spelling of 248749542 in words is "two hundred forty-eight million, seven hundred forty-nine thousand, five hundred forty-two".