1021043070 has 40 divisors (see below), whose sum is σ = 2745473544. Its totient is φ = 272277936.

The previous prime is 1021042999. The next prime is 1021043077. The reversal of 1021043070 is 703401201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021043077) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 629464 + ... + 631083.

Almost surely, 2^1021043070 is an apocalyptic number.

1021043070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021043070 is an abundant number, since it is smaller than the sum of its proper divisors (1724430474).

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

1021043070 is a wasteful number, since it uses less digits than its factorization.

1021043070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1260566 (or 1260557 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 1021043070 is about 31953.7645669489. The cubic root of 1021043070 is about 1006.9657227118.

Adding to 1021043070 its reverse (703401201), we get a palindrome (1724444271).

The spelling of 1021043070 in words is "one billion, twenty-one million, forty-three thousand, seventy".