126520153 has 4 divisors (see below), whose sum is σ = 127748608. Its totient is φ = 125291700.

The previous prime is 126520129. The next prime is 126520189. The reversal of 126520153 is 351025621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126520153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126520123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 614073 + ... + 614278.

It is an arithmetic number, because the mean of its divisors is an integer number (31937152).

Almost surely, 2^126520153 is an apocalyptic number.

It is an amenable number.

126520153 is a deficient number, since it is larger than the sum of its proper divisors (1228455).

126520153 is a wasteful number, since it uses less digits than its factorization.

126520153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228454.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 126520153 is about 11248.1177536511. The cubic root of 126520153 is about 502.0187093232.

Adding to 126520153 its reverse (351025621), we get a palindrome (477545774).

The spelling of 126520153 in words is "one hundred twenty-six million, five hundred twenty thousand, one hundred fifty-three".