1051013421 has 16 divisors (see below), whose sum is σ = 1566980800. Its totient is φ = 696209904.

The previous prime is 1051013419. The next prime is 1051013437. The reversal of 1051013421 is 1243101501.

1051013421 is a `hidden beast` number, since 1 + 0 + 510 + 134 + 21 = 666.

It is not a de Polignac number, because 1051013421 - 2¹ = 1051013419 is a prime.

It is a super-2 number, since 2×1051013421² = 2209258422244246482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1051013394 and 1051013403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051013441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119731 + ... + 128208.

It is an arithmetic number, because the mean of its divisors is an integer number (97936300).

Almost surely, 2^1051013421 is an apocalyptic number.

It is an amenable number.

1051013421 is a deficient number, since it is larger than the sum of its proper divisors (515967379).

1051013421 is a wasteful number, since it uses less digits than its factorization.

1051013421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248105 (or 248099 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1051013421 is about 32419.3371462157. The cubic root of 1051013421 is about 1016.7232476737.

Adding to 1051013421 its reverse (1243101501), we get a palindrome (2294114922).

The spelling of 1051013421 in words is "one billion, fifty-one million, thirteen thousand, four hundred twenty-one".