1040625421 has 16 divisors (see below), whose sum is σ = 1215244800. Its totient is φ = 881031600.

The previous prime is 1040625419. The next prime is 1040625433. The reversal of 1040625421 is 1245260401.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1040625421 - 2¹ = 1040625419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040625401) 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, 29865 + ... + 54526.

It is an arithmetic number, because the mean of its divisors is an integer number (75952800).

Almost surely, 2^1040625421 is an apocalyptic number.

1040625421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1040625421 is a deficient number, since it is larger than the sum of its proper divisors (174619379).

1040625421 is a wasteful number, since it uses less digits than its factorization.

1040625421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84480.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1040625421 is about 32258.7262767766. The cubic root of 1040625421 is about 1013.3624564455.

Adding to 1040625421 its reverse (1245260401), we get a palindrome (2285885822).

The spelling of 1040625421 in words is "one billion, forty million, six hundred twenty-five thousand, four hundred twenty-one".