154207422 has 32 divisors (see below), whose sum is σ = 349155360. Its totient is φ = 50431680.

The previous prime is 154207411. The next prime is 154207429. The reversal of 154207422 is 224702451.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154207429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24079 + ... + 29802.

It is an arithmetic number, because the mean of its divisors is an integer number (10911105).

Almost surely, 2^154207422 is an apocalyptic number.

154207422 is an abundant number, since it is smaller than the sum of its proper divisors (194947938).

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

154207422 is a wasteful number, since it uses less digits than its factorization.

154207422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53945 (or 53939 counting only the distinct ones).

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

The square root of 154207422 is about 12418.0281043328. The cubic root of 154207422 is about 536.2513834382.

Adding to 154207422 its reverse (224702451), we get a palindrome (378909873).

The spelling of 154207422 in words is "one hundred fifty-four million, two hundred seven thousand, four hundred twenty-two".