110137421 has 2 divisors, whose sum is σ = 110137422. Its totient is φ = 110137420.

The previous prime is 110137397. The next prime is 110137429. The reversal of 110137421 is 124731011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68392900 + 41744521 = 8270^2 + 6461^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110137421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 110137393 and 110137402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110137429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55068710 + 55068711.

It is an arithmetic number, because the mean of its divisors is an integer number (55068711).

Almost surely, 2^110137421 is an apocalyptic number.

It is an amenable number.

110137421 is a deficient number, since it is larger than the sum of its proper divisors (1).

110137421 is an equidigital number, since it uses as much as digits as its factorization.

110137421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 110137421 is about 10494.6377260008. The cubic root of 110137421 is about 479.3414304654.

Adding to 110137421 its reverse (124731011), we get a palindrome (234868432).

The spelling of 110137421 in words is "one hundred ten million, one hundred thirty-seven thousand, four hundred twenty-one".