1034557921 has 4 divisors (see below), whose sum is σ = 1049999152. Its totient is φ = 1019116692.

The previous prime is 1034557907. The next prime is 1034557939. The reversal of 1034557921 is 1297554301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1297554301 = 127 ⋅10216963.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1034557921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1034557991) 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, 7720515 + ... + 7720648.

It is an arithmetic number, because the mean of its divisors is an integer number (262499788).

Almost surely, 2^1034557921 is an apocalyptic number.

It is an amenable number.

1034557921 is a deficient number, since it is larger than the sum of its proper divisors (15441231).

1034557921 is an equidigital number, since it uses as much as digits as its factorization.

1034557921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15441230.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 1034557921 is about 32164.5444705813. The cubic root of 1034557921 is about 1011.3891029019.

The spelling of 1034557921 in words is "one billion, thirty-four million, five hundred fifty-seven thousand, nine hundred twenty-one".