45421740 has 288 divisors, whose sum is σ = 176117760. Its totient is φ = 9220608.

The previous prime is 45421729. The next prime is 45421741. The reversal of 45421740 is 4712454.

It is not an unprimeable number, because it can be changed into a prime (45421741) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 769831 + ... + 769889.

It is an arithmetic number, because the mean of its divisors is an integer number (611520).

Almost surely, 2^45421740 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 45421740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88058880).

45421740 is an abundant number, since it is smaller than the sum of its proper divisors (130696020).

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

45421740 is a wasteful number, since it uses less digits than its factorization.

45421740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 45421740 is about 6739.5652678789. The cubic root of 45421740 is about 356.7970505732.

The spelling of 45421740 in words is "forty-five million, four hundred twenty-one thousand, seven hundred forty".