42491316 has 48 divisors (see below), whose sum is σ = 113710464. Its totient is φ = 12097536.

The previous prime is 42491303. The next prime is 42491341. The reversal of 42491316 is 61319424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28936 + ... + 30368.

It is an arithmetic number, because the mean of its divisors is an integer number (2368968).

Almost surely, 2^42491316 is an apocalyptic number.

It is an amenable number.

42491316 is an abundant number, since it is smaller than the sum of its proper divisors (71219148).

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

42491316 is a wasteful number, since it uses less digits than its factorization.

42491316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800 (or 1798 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 42491316 is about 6518.5363387804. The cubic root of 42491316 is about 348.9528319984.

It can be divided in two parts, 4249 and 1316, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 42491316 in words is "forty-two million, four hundred ninety-one thousand, three hundred sixteen".