134123421 has 16 divisors (see below), whose sum is σ = 190180224. Its totient is φ = 83787264.

The previous prime is 134123399. The next prime is 134123449. The reversal of 134123421 is 124321431.

It is not a de Polignac number, because 134123421 - 2⁶ = 134123357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134123491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6240 + ... + 17526.

It is an arithmetic number, because the mean of its divisors is an integer number (11886264).

Almost surely, 2^134123421 is an apocalyptic number.

It is an amenable number.

134123421 is a deficient number, since it is larger than the sum of its proper divisors (56056803).

134123421 is a wasteful number, since it uses less digits than its factorization.

134123421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11540.

The product of its digits is 576, while the sum is 21.

The square root of 134123421 is about 11581.1666510762. The cubic root of 134123421 is about 511.8800543510.

Adding to 134123421 its reverse (124321431), we get a palindrome (258444852).

The spelling of 134123421 in words is "one hundred thirty-four million, one hundred twenty-three thousand, four hundred twenty-one".