154340442 has 24 divisors (see below), whose sum is σ = 348944544. Its totient is φ = 49209864.

The previous prime is 154340437. The next prime is 154340443. The reversal of 154340442 is 244043451.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (154340443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185988 + ... + 186815.

It is an arithmetic number, because the mean of its divisors is an integer number (14539356).

Almost surely, 2^154340442 is an apocalyptic number.

154340442 is an abundant number, since it is smaller than the sum of its proper divisors (194604102).

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

154340442 is a wasteful number, since it uses less digits than its factorization.

154340442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372834 (or 372831 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 154340442 is about 12423.3828726318. The cubic root of 154340442 is about 536.4055300576.

Adding to 154340442 its reverse (244043451), we get a palindrome (398383893).

The spelling of 154340442 in words is "one hundred fifty-four million, three hundred forty thousand, four hundred forty-two".