7420851 has 6 divisors (see below), whose sum is σ = 10719020. Its totient is φ = 4947228.

The previous prime is 7420837. The next prime is 7420883. The reversal of 7420851 is 1580247.

It is not a de Polignac number, because 7420851 - 2⁹ = 7420339 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (7420801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 412261 + ... + 412278.

Almost surely, 2^7420851 is an apocalyptic number.

7420851 is a deficient number, since it is larger than the sum of its proper divisors (3298169).

7420851 is a wasteful number, since it uses less digits than its factorization.

7420851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824545 (or 824542 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 7420851 is about 2724.1238958608. The cubic root of 7420851 is about 195.0523725205.

Adding to 7420851 its sum of digits (27), we get a triangular number (7420878 = T₃₈₅₂).

The spelling of 7420851 in words is "seven million, four hundred twenty thousand, eight hundred fifty-one".