7427121469 has 4 divisors (see below), whose sum is σ = 7428240160. Its totient is φ = 7426002780.

The previous prime is 7427121439. The next prime is 7427121491. The reversal of 7427121469 is 9641217247.

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 7427121469 - 2¹¹ = 7427119421 is a prime.

It is a super-2 number, since 2×7427121469² (a number of 21 digits) 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 (7427121409) 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, 549327 + ... + 562684.

It is an arithmetic number, because the mean of its divisors is an integer number (1857060040).

Almost surely, 2^7427121469 is an apocalyptic number.

It is an amenable number.

7427121469 is a deficient number, since it is larger than the sum of its proper divisors (1118691).

7427121469 is a wasteful number, since it uses less digits than its factorization.

7427121469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118690.

The product of its digits is 169344, while the sum is 43.

The square root of 7427121469 is about 86180.7488305828. The cubic root of 7427121469 is about 1951.0729549030.

The spelling of 7427121469 in words is "seven billion, four hundred twenty-seven million, one hundred twenty-one thousand, four hundred sixty-nine".