1269682421 has 16 divisors (see below), whose sum is σ = 1477128960. Its totient is φ = 1068869760.

The previous prime is 1269682411. The next prime is 1269682433. The reversal of 1269682421 is 1242869621.

It is a de Polignac number, because none of the positive numbers 2^k-1269682421 is a prime.

It is a super-2 number, since 2×1269682421² = 3224186900392842482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1269682411) 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, 128945 + ... + 138441.

It is an arithmetic number, because the mean of its divisors is an integer number (92320560).

Almost surely, 2^1269682421 is an apocalyptic number.

It is an amenable number.

1269682421 is a deficient number, since it is larger than the sum of its proper divisors (207446539).

1269682421 is an equidigital number, since it uses as much as digits as its factorization.

1269682421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9844.

The product of its digits is 82944, while the sum is 41.

The square root of 1269682421 is about 35632.6033430060. The cubic root of 1269682421 is about 1082.8418585079.

The spelling of 1269682421 in words is "one billion, two hundred sixty-nine million, six hundred eighty-two thousand, four hundred twenty-one".