113143420 has 48 divisors (see below), whose sum is σ = 256965408. Its totient is φ = 41598720.

The previous prime is 113143409. The next prime is 113143427. The reversal of 113143420 is 24341311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113143427) 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, 71235 + ... + 72805.

It is an arithmetic number, because the mean of its divisors is an integer number (5353446).

Almost surely, 2^113143420 is an apocalyptic number.

113143420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113143420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128482704).

113143420 is an abundant number, since it is smaller than the sum of its proper divisors (143821988).

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

113143420 is a wasteful number, since it uses less digits than its factorization.

113143420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1870 (or 1868 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 113143420 is about 10636.8895829561. The cubic root of 113143420 is about 483.6632621184.

Adding to 113143420 its reverse (24341311), we get a palindrome (137484731).

It can be divided in two parts, 1131 and 43420, that added together give a triangular number (44551 = T₂₉₈).

The spelling of 113143420 in words is "one hundred thirteen million, one hundred forty-three thousand, four hundred twenty".