1021404054 has 32 divisors (see below), whose sum is σ = 2282878080. Its totient is φ = 301966400.

The previous prime is 1021404053. The next prime is 1021404091. The reversal of 1021404054 is 4504041201.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1021404054.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021404053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186024 + ... + 191435.

It is an arithmetic number, because the mean of its divisors is an integer number (71339940).

Almost surely, 2^1021404054 is an apocalyptic number.

1021404054 is an abundant number, since it is smaller than the sum of its proper divisors (1261474026).

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

1021404054 is a wasteful number, since it uses less digits than its factorization.

1021404054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377516.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1021404054 is about 31959.4126041140. The cubic root of 1021404054 is about 1007.0843777408.

Adding to 1021404054 its reverse (4504041201), we get a palindrome (5525445255).

The spelling of 1021404054 in words is "one billion, twenty-one million, four hundred four thousand, fifty-four".