1241890 has 32 divisors (see below), whose sum is σ = 2476656. Its totient is φ = 445440.

The previous prime is 1241879. The next prime is 1241893. The reversal of 1241890 is 981421.

1241890 = 33² + 34² + ... + 155².

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 7569 + 1234321 = 87^2 + 1111^2 .

It is not an unprimeable number, because it can be changed into a prime (1241893) 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, 5214 + ... + 5446.

2^1241890 is an apocalyptic number.

1241890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1241890 is a deficient number, since it is larger than the sum of its proper divisors (1234766).

1241890 is a wasteful number, since it uses less digits than its factorization.

1241890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1241890 is about 1114.4011844933. The cubic root of 1241890 is about 107.4882626450.

The spelling of 1241890 in words is "one million, two hundred forty-one thousand, eight hundred ninety".