42723450 has 240 divisors, whose sum is σ = 149079744. Its totient is φ = 8812800.

The previous prime is 42723449. The next prime is 42723479. The reversal of 42723450 is 5432724.

42723450 is a `hidden beast` number, since 427 + 234 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 311782 + ... + 311918.

Almost surely, 2^42723450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42723450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74539872).

42723450 is an abundant number, since it is smaller than the sum of its proper divisors (106356294).

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

42723450 is a wasteful number, since it uses less digits than its factorization.

42723450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 42723450 is about 6536.3177707330. The cubic root of 42723450 is about 349.5871322111.

The spelling of 42723450 in words is "forty-two million, seven hundred twenty-three thousand, four hundred fifty".