1026125421 has 16 divisors (see below), whose sum is σ = 1396460736. Its totient is φ = 669982976.

The previous prime is 1026125417. The next prime is 1026125437. The reversal of 1026125421 is 1245216201.

It is a cyclic number.

It is not a de Polignac number, because 1026125421 - 2² = 1026125417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1026125391 and 1026125400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026125021) 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, 88846 + ... + 99728.

It is an arithmetic number, because the mean of its divisors is an integer number (87278796).

Almost surely, 2^1026125421 is an apocalyptic number.

It is an amenable number.

1026125421 is a deficient number, since it is larger than the sum of its proper divisors (370335315).

1026125421 is a wasteful number, since it uses less digits than its factorization.

1026125421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11532.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1026125421 is about 32033.1924884174. The cubic root of 1026125421 is about 1008.6337180569.

The spelling of 1026125421 in words is "one billion, twenty-six million, one hundred twenty-five thousand, four hundred twenty-one".