423043154 has 4 divisors (see below), whose sum is σ = 634564734. Its totient is φ = 211521576.

The previous prime is 423043141. The next prime is 423043217. The reversal of 423043154 is 451340324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 293197129 + 129846025 = 17123^2 + 11395^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105760787 + ... + 105760790.

Almost surely, 2^423043154 is an apocalyptic number.

423043154 is a deficient number, since it is larger than the sum of its proper divisors (211521580).

423043154 is a wasteful number, since it uses less digits than its factorization.

423043154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211521579.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 423043154 is about 20568.0128840878. The cubic root of 423043154 is about 750.6916014613.

Adding to 423043154 its reverse (451340324), we get a palindrome (874383478).

The spelling of 423043154 in words is "four hundred twenty-three million, forty-three thousand, one hundred fifty-four".