1057420167973 has 8 divisors (see below), whose sum is σ = 1139651945208. Its totient is φ = 975315785664.

The previous prime is 1057420167917. The next prime is 1057420167997. The reversal of 1057420167973 is 3797610247501.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 240381342369 + 817038825604 = 490287^2 + 903902^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1057420167973 is a prime.

It is a super-2 number, since 2×1057420167973² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1057420167973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057420167173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31831486 + ... + 31864687.

It is an arithmetic number, because the mean of its divisors is an integer number (142456493151).

Almost surely, 2^{1057420167973} is an apocalyptic number.

1057420167973 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1057420167973 is a deficient number, since it is larger than the sum of its proper divisors (82231777235).

1057420167973 is a wasteful number, since it uses less digits than its factorization.

1057420167973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63697463.

The product of its (nonzero) digits is 2222640, while the sum is 52.

The spelling of 1057420167973 in words is "one trillion, fifty-seven billion, four hundred twenty million, one hundred sixty-seven thousand, nine hundred seventy-three".