134757421 has 2 divisors, whose sum is σ = 134757422. Its totient is φ = 134757420.

The previous prime is 134757407. The next prime is 134757431. The reversal of 134757421 is 124757431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119115396 + 15642025 = 10914^2 + 3955^2 .

It is an emirp because it is prime and its reverse (124757431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134757421 - 2²³ = 126368813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134757431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67378710 + 67378711.

It is an arithmetic number, because the mean of its divisors is an integer number (67378711).

Almost surely, 2^134757421 is an apocalyptic number.

It is an amenable number.

134757421 is a deficient number, since it is larger than the sum of its proper divisors (1).

134757421 is an equidigital number, since it uses as much as digits as its factorization.

134757421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23520, while the sum is 34.

The square root of 134757421 is about 11608.5064069414. The cubic root of 134757421 is about 512.6853373698.

The spelling of 134757421 in words is "one hundred thirty-four million, seven hundred fifty-seven thousand, four hundred twenty-one".