1420640742 has 16 divisors (see below), whose sum is σ = 2847074112. Its totient is φ = 472581480.

The previous prime is 1420640737. The next prime is 1420640783. The reversal of 1420640742 is 2470460241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238168 + ... + 244059.

It is an arithmetic number, because the mean of its divisors is an integer number (177942132).

Almost surely, 2^1420640742 is an apocalyptic number.

1420640742 is an abundant number, since it is smaller than the sum of its proper divisors (1426433370).

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

1420640742 is a wasteful number, since it uses less digits than its factorization.

1420640742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482723.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 1420640742 is about 37691.3881675908. The cubic root of 1420640742 is about 1124.1598974450.

The spelling of 1420640742 in words is "one billion, four hundred twenty million, six hundred forty thousand, seven hundred forty-two".