1421723077734 has 16 divisors (see below), whose sum is σ = 2967074249472. Its totient is φ = 453303010248.

The previous prime is 1421723077721. The next prime is 1421723077783. The reversal of 1421723077734 is 4377703271241.

It is a super-2 number, since 2×1421723077734² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5151170434 + ... + 5151170709.

It is an arithmetic number, because the mean of its divisors is an integer number (185442140592).

Almost surely, 2^{1421723077734} is an apocalyptic number.

1421723077734 is an abundant number, since it is smaller than the sum of its proper divisors (1545351171738).

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

1421723077734 is a wasteful number, since it uses less digits than its factorization.

1421723077734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10302341171.

The product of its (nonzero) digits is 1382976, while the sum is 48.

The spelling of 1421723077734 in words is "one trillion, four hundred twenty-one billion, seven hundred twenty-three million, seventy-seven thousand, seven hundred thirty-four".