1054121641 has 4 divisors (see below), whose sum is σ = 1054299652. Its totient is φ = 1053943632.

The previous prime is 1054121639. The next prime is 1054121657. The reversal of 1054121641 is 1461214501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 889769241 + 164352400 = 29829^2 + 12820^2 .

It is a cyclic number.

It is not a de Polignac number, because 1054121641 - 2¹ = 1054121639 is a prime.

It is a super-2 number, since 2×1054121641² = 2222344868049065762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1054121681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79806 + ... + 92071.

It is an arithmetic number, because the mean of its divisors is an integer number (263574913).

Almost surely, 2^1054121641 is an apocalyptic number.

It is an amenable number.

1054121641 is a deficient number, since it is larger than the sum of its proper divisors (178011).

1054121641 is an equidigital number, since it uses as much as digits as its factorization.

1054121641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178010.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1054121641 is about 32467.2395038445. The cubic root of 1054121641 is about 1017.7245318630.

The spelling of 1054121641 in words is "one billion, fifty-four million, one hundred twenty-one thousand, six hundred forty-one".