154700442 has 160 divisors (see below), whose sum is σ = 411642000. Its totient is φ = 42964992.

The previous prime is 154700437. The next prime is 154700443. The reversal of 154700442 is 244007451.

154700442 is a `hidden beast` number, since 154 + 70 + 0 + 442 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 39803481 + 114896961 = 6309^2 + 10719^2 .

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

It is not an unprimeable number, because it can be changed into a prime (154700443) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1038184 + ... + 1038332.

Almost surely, 2^154700442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 154700442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205821000).

154700442 is an abundant number, since it is smaller than the sum of its proper divisors (256941558).

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

154700442 is a wasteful number, since it uses less digits than its factorization.

154700442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 213 counting only the distinct ones).

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

The square root of 154700442 is about 12437.8632409269. The cubic root of 154700442 is about 536.8222625793.

Adding to 154700442 its reverse (244007451), we get a palindrome (398707893).

The spelling of 154700442 in words is "one hundred fifty-four million, seven hundred thousand, four hundred forty-two".