61421002 has 8 divisors (see below), whose sum is σ = 92259396. Its totient is φ = 30667872.

The previous prime is 61420991. The next prime is 61421023. The reversal of 61421002 is 20012416.

It can be written as a sum of positive squares in 2 ways, for example, as 51251281 + 10169721 = 7159^2 + 3189^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19483 + ... + 22414.

Almost surely, 2^61421002 is an apocalyptic number.

61421002 is a deficient number, since it is larger than the sum of its proper divisors (30838394).

61421002 is a wasteful number, since it uses less digits than its factorization.

61421002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42632.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 61421002 is about 7837.1552236765. The cubic root of 61421002 is about 394.5532566090.

Adding to 61421002 its reverse (20012416), we get a palindrome (81433418).

The spelling of 61421002 in words is "sixty-one million, four hundred twenty-one thousand, two".