7121323437 has 8 divisors (see below), whose sum is σ = 9751722336. Its totient is φ = 4619236752.

The previous prime is 7121323399. The next prime is 7121323471. The reversal of 7121323437 is 7343231217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7121323437 - 2⁷ = 7121323309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7121323398 and 7121323407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7121323337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32077923 + ... + 32078144.

It is an arithmetic number, because the mean of its divisors is an integer number (1218965292).

Almost surely, 2^7121323437 is an apocalyptic number.

It is an amenable number.

7121323437 is a deficient number, since it is larger than the sum of its proper divisors (2630398899).

7121323437 is a wasteful number, since it uses less digits than its factorization.

7121323437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64156107.

The product of its digits is 21168, while the sum is 33.

The square root of 7121323437 is about 84387.9341908546. The cubic root of 7121323437 is about 1923.9195319243.

The spelling of 7121323437 in words is "seven billion, one hundred twenty-one million, three hundred twenty-three thousand, four hundred thirty-seven".