123220454 has 16 divisors (see below), whose sum is σ = 223661088. Its totient is φ = 49702272.

The previous prime is 123220421. The next prime is 123220459. The reversal of 123220454 is 454022321.

It is a happy number.

It is a super-2 number, since 2×123220454² = 30366560567932232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123220459) 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, 258629 + ... + 259104.

It is an arithmetic number, because the mean of its divisors is an integer number (13978818).

Almost surely, 2^123220454 is an apocalyptic number.

123220454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

123220454 is a deficient number, since it is larger than the sum of its proper divisors (100440634).

123220454 is a wasteful number, since it uses less digits than its factorization.

123220454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517759.

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

The square root of 123220454 is about 11100.4708909127. The cubic root of 123220454 is about 497.6159224157.

Adding to 123220454 its reverse (454022321), we get a palindrome (577242775).

The spelling of 123220454 in words is "one hundred twenty-three million, two hundred twenty thousand, four hundred fifty-four".