1021672741 has 8 divisors (see below), whose sum is σ = 1047311640. Its totient is φ = 996348672.

The previous prime is 1021672739. The next prime is 1021672763. The reversal of 1021672741 is 1472761201.

It can be written as a sum of positive squares in 4 ways, for example, as 2722500 + 1018950241 = 1650^2 + 31921^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1021672741 - 2¹ = 1021672739 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021672711) 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, 72130 + ... + 85123.

It is an arithmetic number, because the mean of its divisors is an integer number (130913955).

Almost surely, 2^1021672741 is an apocalyptic number.

It is an amenable number.

1021672741 is a deficient number, since it is larger than the sum of its proper divisors (25638899).

1021672741 is an equidigital number, since it uses as much as digits as its factorization.

1021672741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157415.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 1021672741 is about 31963.6158937001. The cubic root of 1021672741 is about 1007.1726767040.

The spelling of 1021672741 in words is "one billion, twenty-one million, six hundred seventy-two thousand, seven hundred forty-one".