1021497741 has 24 divisors (see below), whose sum is σ = 1694353440. Its totient is φ = 586504800.

The previous prime is 1021497731. The next prime is 1021497773. The reversal of 1021497741 is 1477941201.

It is not a de Polignac number, because 1021497741 - 2¹⁹ = 1020973453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1021497696 and 1021497705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021497731) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 269650 + ... + 273411.

It is an arithmetic number, because the mean of its divisors is an integer number (70598060).

Almost surely, 2^1021497741 is an apocalyptic number.

1021497741 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1021497741 is a deficient number, since it is larger than the sum of its proper divisors (672855699).

1021497741 is a wasteful number, since it uses less digits than its factorization.

1021497741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543097 (or 543094 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 1021497741 is about 31960.8782889332. The cubic root of 1021497741 is about 1007.1151679813.

The spelling of 1021497741 in words is "one billion, twenty-one million, four hundred ninety-seven thousand, seven hundred forty-one".