1677121742 has 16 divisors (see below), whose sum is σ = 2544220800. Its totient is φ = 829081440.

The previous prime is 1677121729. The next prime is 1677121781. The reversal of 1677121742 is 2471217761.

It is a super-2 number, since 2×1677121742² = 5625474674978229128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1677121696 and 1677121705.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96392 + ... + 112452.

It is an arithmetic number, because the mean of its divisors is an integer number (159013800).

Almost surely, 2^1677121742 is an apocalyptic number.

1677121742 is a deficient number, since it is larger than the sum of its proper divisors (867099058).

1677121742 is a wasteful number, since it uses less digits than its factorization.

1677121742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16651.

The product of its digits is 32928, while the sum is 38.

The square root of 1677121742 is about 40952.6768600051. The cubic root of 1677121742 is about 1188.1051079975.

The spelling of 1677121742 in words is "one billion, six hundred seventy-seven million, one hundred twenty-one thousand, seven hundred forty-two".