102034421 has 2 divisors, whose sum is σ = 102034422. Its totient is φ = 102034420.

The previous prime is 102034409. The next prime is 102034447. The reversal of 102034421 is 124430201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65431921 + 36602500 = 8089^2 + 6050^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102034421 is a prime.

It is a super-2 number, since 2×102034421² = 20822046137610482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102034421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102036421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51017210 + 51017211.

It is an arithmetic number, because the mean of its divisors is an integer number (51017211).

Almost surely, 2^102034421 is an apocalyptic number.

It is an amenable number.

102034421 is a deficient number, since it is larger than the sum of its proper divisors (1).

102034421 is an equidigital number, since it uses as much as digits as its factorization.

102034421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 102034421 is about 10101.2088880490. The cubic root of 102034421 is about 467.2854245152.

Adding to 102034421 its reverse (124430201), we get a palindrome (226464622).

The spelling of 102034421 in words is "one hundred two million, thirty-four thousand, four hundred twenty-one".