1233420433501 has 4 divisors (see below), whose sum is σ = 1233477762112. Its totient is φ = 1233363104892.

The previous prime is 1233420433471. The next prime is 1233420433559. The reversal of 1233420433501 is 1053340243321.

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 1233420433501 - 2¹⁵ = 1233420400733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233420433801) 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, 28632021 + ... + 28675066.

It is an arithmetic number, because the mean of its divisors is an integer number (308369440528).

Almost surely, 2^{1233420433501} is an apocalyptic number.

It is an amenable number.

1233420433501 is a deficient number, since it is larger than the sum of its proper divisors (57328611).

1233420433501 is an equidigital number, since it uses as much as digits as its factorization.

1233420433501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57328610.

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 1233420433501 its reverse (1053340243321), we get a palindrome (2286760676822).

The spelling of 1233420433501 in words is "one trillion, two hundred thirty-three billion, four hundred twenty million, four hundred thirty-three thousand, five hundred one".