126420513 has 8 divisors (see below), whose sum is σ = 168632928. Its totient is φ = 84244224.

The previous prime is 126420493. The next prime is 126420557. The reversal of 126420513 is 315024621.

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

It is not a de Polignac number, because 126420513 - 2¹⁸ = 126158369 is a prime.

It is a super-2 number, since 2×126420513² = 31964292214366338, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (126420113) 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, 606 + ... + 15912.

It is an arithmetic number, because the mean of its divisors is an integer number (21079116).

Almost surely, 2^126420513 is an apocalyptic number.

It is an amenable number.

126420513 is a deficient number, since it is larger than the sum of its proper divisors (42212415).

126420513 is a wasteful number, since it uses less digits than its factorization.

126420513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18063.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 126420513 is about 11243.6876957696. The cubic root of 126420513 is about 501.8868876858.

The spelling of 126420513 in words is "one hundred twenty-six million, four hundred twenty thousand, five hundred thirteen".