7420137420 has 48 divisors (see below), whose sum is σ = 20915848800. Its totient is φ = 1965421056.

The previous prime is 7420137397. The next prime is 7420137437. The reversal of 7420137420 is 247310247.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 406057 + ... + 423936.

It is an arithmetic number, because the mean of its divisors is an integer number (435746850).

Almost surely, 2^7420137420 is an apocalyptic number.

It is an amenable number.

7420137420 is an abundant number, since it is smaller than the sum of its proper divisors (13495711380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7420137420 is a wasteful number, since it uses less digits than its factorization.

7420137420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830154 (or 830152 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 7420137420 is about 86140.2195260727. The cubic root of 7420137420 is about 1950.4612032047.

Adding to 7420137420 its reverse (247310247), we get a palindrome (7667447667).

The spelling of 7420137420 in words is "seven billion, four hundred twenty million, one hundred thirty-seven thousand, four hundred twenty".