1235901 has 4 divisors (see below), whose sum is σ = 1647872. Its totient is φ = 823932.

The previous prime is 1235891. The next prime is 1235909. The reversal of 1235901 is 1095321.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1095321 = 3 ⋅365107.

It is not a de Polignac number, because 1235901 - 2⁹ = 1235389 is a prime.

It is a super-3 number, since 3×1235901³ = 5663335699887413103, which contains 333 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1235909) 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, 205981 + ... + 205986.

It is an arithmetic number, because the mean of its divisors is an integer number (411968).

2^1235901 is an apocalyptic number.

It is an amenable number.

1235901 is a deficient number, since it is larger than the sum of its proper divisors (411971).

1235901 is an equidigital number, since it uses as much as digits as its factorization.

1235901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411970.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 1235901 is about 1111.7108436999. The cubic root of 1235901 is about 107.3151971809.

The spelling of 1235901 in words is "one million, two hundred thirty-five thousand, nine hundred one".