103752421 has 4 divisors (see below), whose sum is σ = 106165312. Its totient is φ = 101339532.

The previous prime is 103752409. The next prime is 103752437. The reversal of 103752421 is 124257301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 103752421 - 2¹¹ = 103750373 is a prime.

It is a super-2 number, since 2×103752421² = 21529129726722482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103752221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1206381 + ... + 1206466.

It is an arithmetic number, because the mean of its divisors is an integer number (26541328).

Almost surely, 2^103752421 is an apocalyptic number.

It is an amenable number.

103752421 is a deficient number, since it is larger than the sum of its proper divisors (2412891).

103752421 is an equidigital number, since it uses as much as digits as its factorization.

103752421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412890.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 103752421 is about 10185.8932352543. The cubic root of 103752421 is about 469.8934736694.

The spelling of 103752421 in words is "one hundred three million, seven hundred fifty-two thousand, four hundred twenty-one".