1034656421 has 2 divisors, whose sum is σ = 1034656422. Its totient is φ = 1034656420.

The previous prime is 1034656409. The next prime is 1034656453. The reversal of 1034656421 is 1246564301.

It is an a-pointer prime, because the next prime (1034656453) can be obtained adding 1034656421 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1023360100 + 11296321 = 31990^2 + 3361^2 .

It is a cyclic number.

It is not a de Polignac number, because 1034656421 - 2²² = 1030462117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1034656481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 517328210 + 517328211.

It is an arithmetic number, because the mean of its divisors is an integer number (517328211).

Almost surely, 2^1034656421 is an apocalyptic number.

It is an amenable number.

1034656421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1034656421 is an equidigital number, since it uses as much as digits as its factorization.

1034656421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 1034656421 is about 32166.0756232401. The cubic root of 1034656421 is about 1011.4211999175.

The spelling of 1034656421 in words is "one billion, thirty-four million, six hundred fifty-six thousand, four hundred twenty-one".