123863290 has 24 divisors (see below), whose sum is σ = 230395860. Its totient is φ = 47943360.

The previous prime is 123863287. The next prime is 123863293. The reversal of 123863290 is 92368321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (123863287) and next prime (123863293).

It can be written as a sum of positive squares in 2 ways, for example, as 123854641 + 8649 = 11129^2 + 93^2 .

It is a super-2 number, since 2×123863290² = 30684229219248200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123863293) 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, 3166 + ... + 16054.

Almost surely, 2^123863290 is an apocalyptic number.

123863290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123863290 is a deficient number, since it is larger than the sum of its proper divisors (106532570).

123863290 is a wasteful number, since it uses less digits than its factorization.

123863290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12958 (or 12927 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 123863290 is about 11129.3885726036. The cubic root of 123863290 is about 498.4797691475.

The spelling of 123863290 in words is "one hundred twenty-three million, eight hundred sixty-three thousand, two hundred ninety".