10420741521 has 6 divisors (see below), whose sum is σ = 15052182210. Its totient is φ = 6947161008.

The previous prime is 10420741519. The next prime is 10420741523. The reversal of 10420741521 is 12514702401.

It is an interprime number because it is at equal distance from previous prime (10420741519) and next prime (10420741523).

It can be written as a sum of positive squares in only one way, i.e., 9151600896 + 1269140625 = 95664^2 + 35625^2 .

It is not a de Polignac number, because 10420741521 - 2¹ = 10420741519 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10420741523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 578930076 + ... + 578930093.

It is an arithmetic number, because the mean of its divisors is an integer number (2508697035).

Almost surely, 2^10420741521 is an apocalyptic number.

It is an amenable number.

10420741521 is a deficient number, since it is larger than the sum of its proper divisors (4631440689).

10420741521 is a wasteful number, since it uses less digits than its factorization.

10420741521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157860175 (or 1157860172 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The spelling of 10420741521 in words is "ten billion, four hundred twenty million, seven hundred forty-one thousand, five hundred twenty-one".