13140457 has 8 divisors (see below), whose sum is σ = 15089760. Its totient is φ = 11316960.

The previous prime is 13140433. The next prime is 13140461. The reversal of 13140457 is 75404131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13140457 - 2⁷ = 13140329 is a prime.

It is a super-2 number, since 2×13140457² = 345343220337698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13140427) 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, 31228 + ... + 31645.

It is an arithmetic number, because the mean of its divisors is an integer number (1886220).

Almost surely, 2^13140457 is an apocalyptic number.

It is an amenable number.

13140457 is a deficient number, since it is larger than the sum of its proper divisors (1949303).

13140457 is a wasteful number, since it uses less digits than its factorization.

13140457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62903.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 13140457 is about 3624.9768275121. The cubic root of 13140457 is about 235.9772612871.

Adding to 13140457 its reverse (75404131), we get a palindrome (88544588).

The spelling of 13140457 in words is "thirteen million, one hundred forty thousand, four hundred fifty-seven".