42722154 has 80 divisors (see below), whose sum is σ = 101477376. Its totient is φ = 13413600.

The previous prime is 42722149. The next prime is 42722159. The reversal of 42722154 is 45122724.

It is an interprime number because it is at equal distance from previous prime (42722149) and next prime (42722159).

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42722159) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 235944 + ... + 236124.

Almost surely, 2^42722154 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42722154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50738688).

42722154 is an abundant number, since it is smaller than the sum of its proper divisors (58755222).

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

42722154 is a wasteful number, since it uses less digits than its factorization.

42722154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 264 counting only the distinct ones).

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

The square root of 42722154 is about 6536.2186315943. The cubic root of 42722154 is about 349.5835973100.

Adding to 42722154 its reverse (45122724), we get a palindrome (87844878).

The spelling of 42722154 in words is "forty-two million, seven hundred twenty-two thousand, one hundred fifty-four".