1021210423 has 8 divisors (see below), whose sum is σ = 1077594800. Its totient is φ = 965089728.

The previous prime is 1021210391. The next prime is 1021210439. The reversal of 1021210423 is 3240121201.

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

It is a cyclic number.

It is not a de Polignac number, because 1021210423 - 2⁵ = 1021210391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021210397 and 1021210406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021210453) 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, 57936 + ... + 73477.

It is an arithmetic number, because the mean of its divisors is an integer number (134699350).

Almost surely, 2^1021210423 is an apocalyptic number.

1021210423 is a deficient number, since it is larger than the sum of its proper divisors (56384377).

1021210423 is a wasteful number, since it uses less digits than its factorization.

1021210423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131841.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1021210423 is about 31956.3831338905. The cubic root of 1021210423 is about 1007.0207349287.

Adding to 1021210423 its reverse (3240121201), we get a palindrome (4261331624).

The spelling of 1021210423 in words is "one billion, twenty-one million, two hundred ten thousand, four hundred twenty-three".