1371729642 has 16 divisors (see below), whose sum is σ = 2755764480. Its totient is φ = 455192352.

The previous prime is 1371729617. The next prime is 1371729649. The reversal of 1371729642 is 2469271731.

It is a junction number, because it is equal to n+sod(n) for n = 1371729594 and 1371729603.

It is not an unprimeable number, because it can be changed into a prime (1371729649) by changing a digit.

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, 511267 + ... + 513942.

It is an arithmetic number, because the mean of its divisors is an integer number (172235280).

Almost surely, 2^1371729642 is an apocalyptic number.

1371729642 is an abundant number, since it is smaller than the sum of its proper divisors (1384034838).

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

1371729642 is a wasteful number, since it uses less digits than its factorization.

1371729642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025437.

The product of its digits is 127008, while the sum is 42.

The square root of 1371729642 is about 37036.8686851359. The cubic root of 1371729642 is about 1111.1077440705.

The spelling of 1371729642 in words is "one billion, three hundred seventy-one million, seven hundred twenty-nine thousand, six hundred forty-two".