103421412 has 18 divisors (see below), whose sum is σ = 261426438. Its totient is φ = 34473792.

The previous prime is 103421399. The next prime is 103421419. The reversal of 103421412 is 214124301.

It can be written as a sum of positive squares in only one way, i.e., 51926436 + 51494976 = 7206^2 + 7176^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (103421419) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1436373 + ... + 1436444.

It is an arithmetic number, because the mean of its divisors is an integer number (14523691).

Almost surely, 2^103421412 is an apocalyptic number.

103421412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

103421412 is an abundant number, since it is smaller than the sum of its proper divisors (158005026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

103421412 is a wasteful number, since it uses less digits than its factorization.

103421412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2872827 (or 2872822 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 103421412 is about 10169.6318517437. The cubic root of 103421412 is about 469.3932293690.

Adding to 103421412 its reverse (214124301), we get a palindrome (317545713).

The spelling of 103421412 in words is "one hundred three million, four hundred twenty-one thousand, four hundred twelve".