1375121401 has 4 divisors (see below), whose sum is σ = 1434909312. Its totient is φ = 1315333492.

The previous prime is 1375121399. The next prime is 1375121443. The reversal of 1375121401 is 1041215731.

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 1375121401 - 2¹ = 1375121399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1375101401) 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, 29893921 + ... + 29893966.

It is an arithmetic number, because the mean of its divisors is an integer number (358727328).

Almost surely, 2^1375121401 is an apocalyptic number.

It is an amenable number.

1375121401 is a deficient number, since it is larger than the sum of its proper divisors (59787911).

1375121401 is an equidigital number, since it uses as much as digits as its factorization.

1375121401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59787910.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1375121401 is about 37082.6293700973. The cubic root of 1375121401 is about 1112.0227707951.

The spelling of 1375121401 in words is "one billion, three hundred seventy-five million, one hundred twenty-one thousand, four hundred one".