223420154 has 16 divisors (see below), whose sum is σ = 355273128. Its totient is φ = 105011712.

The previous prime is 223420151. The next prime is 223420157. The reversal of 223420154 is 451024322.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (223420151) and next prime (223420157).

It can be written as a sum of positive squares in 4 ways, for example, as 199459129 + 23961025 = 14123^2 + 4895^2 .

It is not an unprimeable number, because it can be changed into a prime (223420151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28352 + ... + 35364.

Almost surely, 2^223420154 is an apocalyptic number.

223420154 is a deficient number, since it is larger than the sum of its proper divisors (131852974).

223420154 is a wasteful number, since it uses less digits than its factorization.

223420154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7969.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 223420154 is about 14947.2456994591. The cubic root of 223420154 is about 606.7933076333.

Adding to 223420154 its reverse (451024322), we get a palindrome (674444476).

The spelling of 223420154 in words is "two hundred twenty-three million, four hundred twenty thousand, one hundred fifty-four".