135749457 has 24 divisors (see below), whose sum is σ = 198744000. Its totient is φ = 89281440.

The previous prime is 135749423. The next prime is 135749477. The reversal of 135749457 is 754947531.

135749457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 135749457 - 2¹⁰ = 135748433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135749407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 271794 + ... + 272292.

It is an arithmetic number, because the mean of its divisors is an integer number (8281000).

Almost surely, 2^135749457 is an apocalyptic number.

It is an amenable number.

135749457 is a deficient number, since it is larger than the sum of its proper divisors (62994543).

135749457 is a wasteful number, since it uses less digits than its factorization.

135749457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853 (or 850 counting only the distinct ones).

The product of its digits is 529200, while the sum is 45.

The square root of 135749457 is about 11651.1568953473. The cubic root of 135749457 is about 513.9403315596.

The spelling of 135749457 in words is "one hundred thirty-five million, seven hundred forty-nine thousand, four hundred fifty-seven".